Virgin import of FSF groff v1.10

20 files changed, 14397 insertions, 0 deletions

diff --git a/contrib/groff/pic/Makefile.dep b/contrib/groff/pic/Makefile.dep
new file mode 100644
index 000000000000..1e07874890b7
--- /dev/null
+++ b/contrib/groff/pic/Makefile.dep
@@ -0,0 +1,24 @@
+lex.o: lex.cc pic.h ../include/assert.h ../include/cset.h \
+ ../include/lib.h ../include/stringclass.h ../include/errarg.h \
+ ../include/error.h position.h text.h output.h ../include/ptable.h \
+ object.h pic.cc
+main.o: main.cc pic.h ../include/assert.h ../include/cset.h \
+ ../include/lib.h ../include/stringclass.h ../include/errarg.h \
+ ../include/error.h position.h text.h output.h
+object.o: object.cc pic.h ../include/assert.h ../include/cset.h \
+ ../include/lib.h ../include/stringclass.h ../include/errarg.h \
+ ../include/error.h position.h text.h output.h ../include/ptable.h \
+ object.h
+common.o: common.cc pic.h ../include/assert.h ../include/cset.h \
+ ../include/lib.h ../include/stringclass.h ../include/errarg.h \
+ ../include/error.h position.h text.h output.h common.h
+troff.o: troff.cc pic.h ../include/assert.h ../include/cset.h \
+ ../include/lib.h ../include/stringclass.h ../include/errarg.h \
+ ../include/error.h position.h text.h output.h common.h
+tex.o: tex.cc pic.h ../include/assert.h ../include/cset.h \
+ ../include/lib.h ../include/stringclass.h ../include/errarg.h \
+ ../include/error.h position.h text.h output.h common.h
+pic.o: pic.cc pic.h ../include/assert.h ../include/cset.h \
+ ../include/lib.h ../include/stringclass.h ../include/errarg.h \
+ ../include/error.h position.h text.h output.h ../include/ptable.h \
+ object.h
diff --git a/contrib/groff/pic/Makefile.sub b/contrib/groff/pic/Makefile.sub
new file mode 100644
index 000000000000..06d19750dff6
--- /dev/null
+++ b/contrib/groff/pic/Makefile.sub
@@ -0,0 +1,11 @@
+PROG=pic
+MAN1=pic.n
+XLIBS=$(LIBGROFF)
+MLIB=$(LIBM)
+OBJS=pic.o lex.o main.o object.o common.o troff.o tex.o # fig.o 
+CCSRCS=lex.cc main.cc object.cc common.cc troff.cc tex.cc
+HDRS=common.h object.h output.h pic.h position.h text.h
+GRAM=pic.y
+YTABC=pic.cc
+YTABH=pic.tab.h
+NAMEPREFIX=$(g)
diff --git a/contrib/groff/pic/TODO b/contrib/groff/pic/TODO
new file mode 100644
index 000000000000..2346b575e1de
--- /dev/null
+++ b/contrib/groff/pic/TODO
@@ -0,0 +1,37 @@
+Dotted and dashed ellipses.
+
+In troff mode, dotted and dashed splines.
+
+Make DELIMITED have type lstr; this would allow us to give better
+error messages for problems within the body of for and if constructs.
+
+In troff mode without -x, fake \D't' with .ps commands.
+
+Perhaps an option to set command char.
+
+Add an output class for dumb line printers. It wouldn't be pretty but
+it would be better than nothing. Integrate it with texinfo.  Useful
+for groff -Tascii as well.
+
+Option to allow better positioning of arrowheads on arcs.
+
+Perhaps add PostScript output mode.
+
+Change the interface to the output class so that output devices have
+the opportunity to handle arrowheads themselves.
+
+Consider whether the line thickness should scale.
+
+Consider whether the test in a for loop should be fuzzy (as it
+apparently is in grap).
+
+Possibly change fillval so that zero is black.
+
+Provide a way of getting text blocks (positioned with `.in' rather
+than \h), into pic.  Should be possible to use block of diverted text
+in pic.  Possibly something similar to T{ and T} in tbl.
+
+Option to provide macro backtraces.
+
+Have a path that is searched by `copy' statement.  Set by environment
+variable or command line option.
diff --git a/contrib/groff/pic/common.cc b/contrib/groff/pic/common.cc
new file mode 100644
index 000000000000..e83ef3122583
--- /dev/null
+++ b/contrib/groff/pic/common.cc
@@ -0,0 +1,497 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "pic.h"
+#include "common.h"
+
+// output a dashed circle as a series of arcs
+
+void common_output::dashed_circle(const position &cent, double rad,
+				  const line_type &lt)
+{
+  assert(lt.type == line_type::dashed);
+  line_type slt = lt;
+  slt.type = line_type::solid;
+  double dash_angle = lt.dash_width/rad;
+  int ndashes;
+  double gap_angle;
+  if (dash_angle >= M_PI/4.0) {
+    if (dash_angle < M_PI/2.0) {
+      gap_angle = M_PI/2.0 - dash_angle;
+      ndashes = 4;
+    }
+    else if (dash_angle < M_PI) {
+      gap_angle = M_PI - dash_angle;
+      ndashes = 2;
+    }
+    else {
+      circle(cent, rad, slt, -1.0);
+      return;
+    }
+  }
+  else {
+    ndashes = 4*int(ceil(M_PI/(4.0*dash_angle)));
+    gap_angle = (M_PI*2.0)/ndashes - dash_angle;
+  }
+  for (int i = 0; i < ndashes; i++) {
+    double start_angle = i*(dash_angle+gap_angle) - dash_angle/2.0;
+    solid_arc(cent, rad, start_angle, start_angle + dash_angle, lt);
+  }
+}
+
+// output a dotted circle as a series of dots
+
+void common_output::dotted_circle(const position &cent, double rad,
+				  const line_type &lt)
+{
+  assert(lt.type == line_type::dotted);
+  double gap_angle = lt.dash_width/rad;
+  int ndots;
+  if (gap_angle >= M_PI/2.0) {
+    // always have at least 2 dots
+    gap_angle = M_PI;
+    ndots = 2;
+  }
+  else {
+    ndots = 4*int(M_PI/(2.0*gap_angle));
+    gap_angle = (M_PI*2.0)/ndots;
+  }
+  double ang = 0.0;
+  for (int i = 0; i < ndots; i++, ang += gap_angle)
+    dot(cent + position(cos(ang), sin(ang))*rad, lt);
+}
+
+// return non-zero iff we can compute a center
+
+int compute_arc_center(const position &start, const position &cent,
+		       const position &end, position *result)
+{
+  // This finds the point along the vector from start to cent that
+  // is equidistant between start and end.
+  distance c = cent - start;
+  distance e = end - start;
+  double n = c*e;
+  if (n == 0.0)
+    return 0;
+  *result = start + c*((e*e)/(2.0*n));
+  return 1;
+}
+
+// output a dashed arc as a series of arcs
+
+void common_output::dashed_arc(const position &start, const position &cent,
+			       const position &end, const line_type &lt)
+{
+  assert(lt.type == line_type::dashed);
+  position c;
+  if (!compute_arc_center(start, cent, end, &c)) {
+    line(start, &end, 1, lt);
+    return;
+  }
+  distance start_offset = start - c;
+  distance end_offset = end - c;
+  double start_angle = atan2(start_offset.y, start_offset.x);
+  double end_angle = atan2(end_offset.y, end_offset.x);
+  double rad = hypot(c - start);
+  double dash_angle = lt.dash_width/rad;
+  double total_angle = end_angle - start_angle;
+  while (total_angle < 0)
+    total_angle += M_PI + M_PI;
+  if (total_angle <= dash_angle*2.0) {
+    solid_arc(cent, rad, start_angle, end_angle, lt);
+    return;
+  }
+  int ndashes = int((total_angle - dash_angle)/(dash_angle*2.0) + .5);
+  double dash_and_gap_angle = (total_angle - dash_angle)/ndashes;
+  for (int i = 0; i <= ndashes; i++)
+    solid_arc(cent, rad, start_angle + i*dash_and_gap_angle,
+	      start_angle + i*dash_and_gap_angle + dash_angle, lt);
+}
+
+// output a dotted arc as a series of dots
+
+void common_output::dotted_arc(const position &start, const position &cent,
+			       const position &end, const line_type &lt)
+{
+  assert(lt.type == line_type::dotted);
+  position c;
+  if (!compute_arc_center(start, cent, end, &c)) {
+    line(start, &end, 1, lt);
+    return;
+  }
+  distance start_offset = start - c;
+  distance end_offset = end - c;
+  double start_angle = atan2(start_offset.y, start_offset.x);
+  double total_angle = atan2(end_offset.y, end_offset.x) - start_angle;
+  while (total_angle < 0)
+    total_angle += M_PI + M_PI;
+  double rad = hypot(c - start);
+  int ndots = int(total_angle/(lt.dash_width/rad) + .5);
+  if (ndots == 0)
+    dot(start, lt);
+  else {
+    for (int i = 0; i <= ndots; i++) {
+      double a = start_angle + (total_angle*i)/ndots;
+      dot(cent + position(cos(a), sin(a))*rad, lt);
+    }
+  }
+}
+
+void common_output::solid_arc(const position &cent, double rad,
+			      double start_angle, double end_angle,
+			      const line_type &lt)
+{
+  line_type slt = lt;
+  slt.type = line_type::solid;
+  arc(cent + position(cos(start_angle), sin(start_angle))*rad,
+      cent,
+      cent + position(cos(end_angle), sin(end_angle))*rad,
+      slt);
+}
+
+
+void common_output::rounded_box(const position &cent, const distance &dim,
+				double rad, const line_type &lt, double fill)
+{
+  if (fill >= 0.0)
+    filled_rounded_box(cent, dim, rad, fill);
+  switch (lt.type) {
+  case line_type::invisible:
+    break;
+  case line_type::dashed:
+    dashed_rounded_box(cent, dim, rad, lt);
+    break;
+  case line_type::dotted:
+    dotted_rounded_box(cent, dim, rad, lt);
+    break;
+  case line_type::solid:
+    solid_rounded_box(cent, dim, rad, lt);
+    break;
+  default:
+    assert(0);
+  }
+}
+
+
+void common_output::dashed_rounded_box(const position &cent,
+				       const distance &dim, double rad,
+				       const line_type &lt)
+{
+  line_type slt = lt;
+  slt.type = line_type::solid;
+
+  double hor_length = dim.x + (M_PI/2.0 - 2.0)*rad;
+  int n_hor_dashes = int(hor_length/(lt.dash_width*2.0) + .5);
+  double hor_gap_width = (n_hor_dashes != 0
+			  ? hor_length/n_hor_dashes - lt.dash_width
+			  : 0.0);
+
+  double vert_length = dim.y + (M_PI/2.0 - 2.0)*rad;
+  int n_vert_dashes = int(vert_length/(lt.dash_width*2.0) + .5);
+  double vert_gap_width = (n_vert_dashes != 0
+			   ? vert_length/n_vert_dashes - lt.dash_width
+			   : 0.0);
+  // Note that each corner arc has to be split into two for dashing,
+  // because one part is dashed using vert_gap_width, and the other
+  // using hor_gap_width.
+  double offset = lt.dash_width/2.0;
+  dash_arc(cent + position(dim.x/2.0 - rad, -dim.y/2.0 + rad), rad,
+	   -M_PI/4.0, 0, slt, lt.dash_width, vert_gap_width, &offset);
+  dash_line(cent + position(dim.x/2.0, -dim.y/2.0 + rad),
+	    cent + position(dim.x/2.0, dim.y/2.0 - rad),
+	    slt, lt.dash_width, vert_gap_width, &offset);
+  dash_arc(cent + position(dim.x/2.0 - rad, dim.y/2.0 - rad), rad,
+	   0, M_PI/4.0, slt, lt.dash_width, vert_gap_width, &offset);
+
+  offset = lt.dash_width/2.0;
+  dash_arc(cent + position(dim.x/2.0 - rad, dim.y/2.0 - rad), rad,
+	   M_PI/4.0, M_PI/2, slt, lt.dash_width, hor_gap_width, &offset);
+  dash_line(cent + position(dim.x/2.0 - rad, dim.y/2.0),
+	    cent + position(-dim.x/2.0 + rad, dim.y/2.0),
+	    slt, lt.dash_width, hor_gap_width, &offset);
+  dash_arc(cent + position(-dim.x/2.0 + rad, dim.y/2.0 - rad), rad,
+	   M_PI/2, 3*M_PI/4.0, slt, lt.dash_width, hor_gap_width, &offset);
+
+  offset = lt.dash_width/2.0;
+  dash_arc(cent + position(-dim.x/2.0 + rad, dim.y/2.0 - rad), rad,
+	   3.0*M_PI/4.0, M_PI, slt, lt.dash_width, vert_gap_width, &offset);
+  dash_line(cent + position(-dim.x/2.0, dim.y/2.0 - rad),
+	    cent + position(-dim.x/2.0, -dim.y/2.0 + rad),
+	    slt, lt.dash_width, vert_gap_width, &offset);
+  dash_arc(cent + position(-dim.x/2.0 + rad, -dim.y/2.0 + rad), rad,
+	   M_PI, 5.0*M_PI/4.0, slt, lt.dash_width, vert_gap_width, &offset);
+
+  offset = lt.dash_width/2.0;
+  dash_arc(cent + position(-dim.x/2.0 + rad, -dim.y/2.0 + rad), rad,
+	   5*M_PI/4.0, 3*M_PI/2.0, slt, lt.dash_width, hor_gap_width, &offset);
+  dash_line(cent + position(-dim.x/2.0 + rad, -dim.y/2.0),
+	    cent + position(dim.x/2.0 - rad, -dim.y/2.0),
+	    slt, lt.dash_width, hor_gap_width, &offset);
+  dash_arc(cent + position(dim.x/2.0 - rad, -dim.y/2.0 + rad), rad,
+	   3*M_PI/2, 7*M_PI/4, slt, lt.dash_width, hor_gap_width, &offset);
+}
+
+// Used by dashed_rounded_box.
+
+void common_output::dash_arc(const position &cent, double rad,
+			     double start_angle, double end_angle,
+			     const line_type &lt,
+			     double dash_width, double gap_width,
+			     double *offsetp)
+{
+  double length = (end_angle - start_angle)*rad;
+  double pos = 0.0;
+  for (;;) {
+    if (*offsetp >= dash_width) {
+      double rem = dash_width + gap_width - *offsetp;
+      if (pos + rem > length) {
+	*offsetp += length - pos;
+	break;
+      }
+      else {
+	pos += rem;
+	*offsetp = 0.0;
+      }
+    }
+    else {
+      double rem = dash_width  - *offsetp;
+      if (pos + rem > length) {
+	solid_arc(cent, rad, start_angle + pos/rad, end_angle, lt);
+	*offsetp += length - pos;
+	break;
+      }
+      else {
+	solid_arc(cent, rad, start_angle + pos/rad,
+		  start_angle + (pos + rem)/rad, lt);
+	pos += rem;
+	*offsetp = dash_width;
+      }
+    }
+  }
+}
+
+// Used by dashed_rounded_box.
+
+void common_output::dash_line(const position &start, const position &end,
+			      const line_type &lt,
+			      double dash_width, double gap_width,
+			      double *offsetp)
+{
+  distance dist = end - start;
+  double length = hypot(dist);
+  if (length == 0.0)
+    return;
+  double pos = 0.0;
+  for (;;) {
+    if (*offsetp >= dash_width) {
+      double rem = dash_width + gap_width - *offsetp;
+      if (pos + rem > length) {
+	*offsetp += length - pos;
+	break;
+      }
+      else {
+	pos += rem;
+	*offsetp = 0.0;
+      }
+    }
+    else {
+      double rem = dash_width  - *offsetp;
+      if (pos + rem > length) {
+	line(start + dist*(pos/length), &end, 1, lt);
+	*offsetp += length - pos;
+	break;
+      }
+      else {
+	position p(start + dist*((pos + rem)/length));
+	line(start + dist*(pos/length), &p, 1, lt);
+	pos += rem;
+	*offsetp = dash_width;
+      }
+    }
+  }
+}
+
+void common_output::dotted_rounded_box(const position &cent,
+				       const distance &dim, double rad,
+				       const line_type &lt)
+{
+  line_type slt = lt;
+  slt.type = line_type::solid;
+
+  double hor_length = dim.x + (M_PI/2.0 - 2.0)*rad;
+  int n_hor_dots = int(hor_length/lt.dash_width + .5);
+  double hor_gap_width = (n_hor_dots != 0
+			  ? hor_length/n_hor_dots
+			  : lt.dash_width);
+
+  double vert_length = dim.y + (M_PI/2.0 - 2.0)*rad;
+  int n_vert_dots = int(vert_length/lt.dash_width + .5);
+  double vert_gap_width = (n_vert_dots != 0
+			   ? vert_length/n_vert_dots
+			   : lt.dash_width);
+  double epsilon = lt.dash_width/(rad*100.0);
+
+  double offset = 0.0;
+  dot_arc(cent + position(dim.x/2.0 - rad, -dim.y/2.0 + rad), rad,
+	   -M_PI/4.0, 0, slt, vert_gap_width, &offset);
+  dot_line(cent + position(dim.x/2.0, -dim.y/2.0 + rad),
+	    cent + position(dim.x/2.0, dim.y/2.0 - rad),
+	    slt, vert_gap_width, &offset);
+  dot_arc(cent + position(dim.x/2.0 - rad, dim.y/2.0 - rad), rad,
+	   0, M_PI/4.0 - epsilon, slt, vert_gap_width, &offset);
+
+  offset = 0.0;
+  dot_arc(cent + position(dim.x/2.0 - rad, dim.y/2.0 - rad), rad,
+	   M_PI/4.0, M_PI/2, slt, hor_gap_width, &offset);
+  dot_line(cent + position(dim.x/2.0 - rad, dim.y/2.0),
+	    cent + position(-dim.x/2.0 + rad, dim.y/2.0),
+	    slt, hor_gap_width, &offset);
+  dot_arc(cent + position(-dim.x/2.0 + rad, dim.y/2.0 - rad), rad,
+	   M_PI/2, 3*M_PI/4.0 - epsilon, slt, hor_gap_width, &offset);
+
+  offset = 0.0;
+  dot_arc(cent + position(-dim.x/2.0 + rad, dim.y/2.0 - rad), rad,
+	   3.0*M_PI/4.0, M_PI, slt, vert_gap_width, &offset);
+  dot_line(cent + position(-dim.x/2.0, dim.y/2.0 - rad),
+	    cent + position(-dim.x/2.0, -dim.y/2.0 + rad),
+	    slt, vert_gap_width, &offset);
+  dot_arc(cent + position(-dim.x/2.0 + rad, -dim.y/2.0 + rad), rad,
+	   M_PI, 5.0*M_PI/4.0 - epsilon, slt, vert_gap_width, &offset);
+
+  offset = 0.0;
+  dot_arc(cent + position(-dim.x/2.0 + rad, -dim.y/2.0 + rad), rad,
+	   5*M_PI/4.0, 3*M_PI/2.0, slt, hor_gap_width, &offset);
+  dot_line(cent + position(-dim.x/2.0 + rad, -dim.y/2.0),
+	    cent + position(dim.x/2.0 - rad, -dim.y/2.0),
+	    slt, hor_gap_width, &offset);
+  dot_arc(cent + position(dim.x/2.0 - rad, -dim.y/2.0 + rad), rad,
+	   3*M_PI/2, 7*M_PI/4 - epsilon, slt, hor_gap_width, &offset);
+}
+
+// Used by dotted_rounded_box.
+
+void common_output::dot_arc(const position &cent, double rad,
+			    double start_angle, double end_angle,
+			    const line_type &lt, double gap_width,
+			    double *offsetp)
+{
+  double length = (end_angle - start_angle)*rad;
+  double pos = 0.0;
+  for (;;) {
+    if (*offsetp == 0.0) {
+      double ang = start_angle + pos/rad;
+      dot(cent + position(cos(ang), sin(ang))*rad, lt);
+    }
+    double rem = gap_width - *offsetp;
+    if (pos + rem > length) {
+      *offsetp += length - pos;
+      break;
+    }
+    else {
+      pos += rem;
+      *offsetp = 0.0;
+    }
+  }
+}
+
+// Used by dotted_rounded_box.
+
+void common_output::dot_line(const position &start, const position &end,
+			     const line_type &lt, double gap_width,
+			     double *offsetp)
+{
+  distance dist = end - start;
+  double length = hypot(dist);
+  if (length == 0.0)
+    return;
+  double pos = 0.0;
+  for (;;) {
+    if (*offsetp == 0.0)
+      dot(start + dist*(pos/length), lt);
+    double rem = gap_width - *offsetp;
+    if (pos + rem > length) {
+      *offsetp += length - pos;
+      break;
+    }
+    else {
+      pos += rem;
+      *offsetp = 0.0;
+    }
+  }
+}
+
+
+void common_output::solid_rounded_box(const position &cent,
+				      const distance &dim, double rad,
+				      const line_type &lt)
+{
+  position tem = cent - dim/2.0;
+  arc(tem + position(0.0, rad),
+      tem + position(rad, rad),
+      tem + position(rad, 0.0),
+      lt);
+  tem = cent + position(-dim.x/2.0, dim.y/2.0);
+  arc(tem + position(rad, 0.0),
+      tem + position(rad, -rad),
+      tem + position(0.0, -rad),
+      lt);
+  tem = cent + dim/2.0;
+  arc(tem + position(0.0, -rad),
+      tem + position(-rad, -rad),
+      tem + position(-rad, 0.0),
+      lt);
+  tem = cent + position(dim.x/2.0, -dim.y/2.0);
+  arc(tem + position(-rad, 0.0),
+      tem + position(-rad, rad),
+      tem + position(0.0, rad),
+      lt);
+  position end;
+  end = cent + position(-dim.x/2.0, dim.y/2.0 - rad);
+  line(cent - dim/2.0 + position(0.0, rad), &end, 1, lt);
+  end = cent + position(dim.x/2.0 - rad, dim.y/2.0);
+  line(cent + position(-dim.x/2.0 + rad, dim.y/2.0), &end, 1, lt);
+  end = cent + position(dim.x/2.0, -dim.y/2.0 + rad);
+  line(cent + position(dim.x/2.0, dim.y/2.0 - rad), &end, 1, lt);
+  end = cent + position(-dim.x/2.0 + rad, -dim.y/2.0);
+  line(cent + position(dim.x/2.0 - rad, -dim.y/2.0), &end, 1, lt);
+}
+
+void common_output::filled_rounded_box(const position &cent,
+				       const distance &dim, double rad,
+				       double fill)
+{
+  line_type ilt;
+  ilt.type = line_type::invisible;
+  circle(cent + position(dim.x/2.0 - rad, dim.y/2.0 - rad), rad, ilt, fill);
+  circle(cent + position(-dim.x/2.0 + rad, dim.y/2.0 - rad), rad, ilt, fill);
+  circle(cent + position(-dim.x/2.0 + rad, -dim.y/2.0 + rad), rad, ilt, fill);
+  circle(cent + position(dim.x/2.0 - rad, -dim.y/2.0 + rad), rad, ilt, fill);
+  position vec[4];
+  vec[0] = cent + position(dim.x/2.0, dim.y/2.0 - rad);
+  vec[1] = cent + position(-dim.x/2.0, dim.y/2.0 - rad);
+  vec[2] = cent + position(-dim.x/2.0, -dim.y/2.0 + rad);
+  vec[3] = cent + position(dim.x/2.0, -dim.y/2.0 + rad);
+  polygon(vec, 4, ilt, fill);
+  vec[0] = cent + position(dim.x/2.0 - rad, dim.y/2.0);
+  vec[1] = cent + position(-dim.x/2.0 + rad, dim.y/2.0);
+  vec[2] = cent + position(-dim.x/2.0 + rad, -dim.y/2.0);
+  vec[3] = cent + position(dim.x/2.0 - rad, -dim.y/2.0);
+  polygon(vec, 4, ilt, fill);
+}
diff --git a/contrib/groff/pic/common.h b/contrib/groff/pic/common.h
new file mode 100644
index 000000000000..25a6e10c689c
--- /dev/null
+++ b/contrib/groff/pic/common.h
@@ -0,0 +1,70 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+class common_output : public output {
+private:
+  void dash_line(const position &start, const position &end,
+		 const line_type &lt, double dash_width, double gap_width,
+		 double *offsetp);
+  void dash_arc(const position &cent, double rad,
+		double start_angle, double end_angle, const line_type &lt,
+		double dash_width, double gap_width, double *offsetp);
+  void dot_line(const position &start, const position &end,
+		const line_type &lt, double gap_width, double *offsetp);
+  void dot_arc(const position &cent, double rad,
+	       double start_angle, double end_angle, const line_type &lt,
+	       double gap_width, double *offsetp);
+protected:
+  virtual void dot(const position &, const line_type &) = 0;
+  void dashed_circle(const position &, double rad, const line_type &);
+  void dotted_circle(const position &, double rad, const line_type &);
+  void dashed_arc(const position &, const position &, const position &,
+		  const line_type &);
+  void dotted_arc(const position &, const position &, const position &,
+		  const line_type &);
+  virtual void solid_arc(const position &cent, double rad, double start_angle,
+			 double end_angle, const line_type &lt);
+  void dashed_rounded_box(const position &, const distance &, double,
+			  const line_type &);
+  void dotted_rounded_box(const position &, const distance &, double,
+			  const line_type &);
+  void solid_rounded_box(const position &, const distance &, double,
+			 const line_type &);
+  void filled_rounded_box(const position &, const distance &, double, double);
+public:
+  void start_picture(double sc, const position &ll, const position &ur) = 0;
+  void finish_picture() = 0;
+  void circle(const position &, double rad, const line_type &, double) = 0;
+  void text(const position &, text_piece *, int, double) = 0;
+  void line(const position &, const position *, int n, const line_type &) = 0;
+  void polygon(const position *, int n, const line_type &, double) = 0;
+  void spline(const position &, const position *, int n,
+	      const line_type &) = 0;
+  void arc(const position &, const position &, const position &,
+	   const line_type &) = 0;
+  void ellipse(const position &, const distance &,
+	       const line_type &, double) = 0;
+  void rounded_box(const position &, const distance &, double,
+		   const line_type &, double);
+};
+
+int compute_arc_center(const position &start, const position &cent,
+		       const position &end, position *result);
+
diff --git a/contrib/groff/pic/depend b/contrib/groff/pic/depend
new file mode 100644
index 000000000000..73ac3ab9093c
--- /dev/null
+++ b/contrib/groff/pic/depend
@@ -0,0 +1,21 @@
+pic.tab.o : pic.tab.cc pic.h ../lib/assert.h ../lib/cset.h ../lib/lib.h \
+  ../lib/stringclass.h ../lib/errarg.h ../lib/error.h position.h text.h \
+  output.h ../lib/ptable.h object.h
+lex.o : lex.cc pic.h ../lib/assert.h ../lib/cset.h ../lib/lib.h \
+  ../lib/stringclass.h ../lib/errarg.h ../lib/error.h position.h text.h \
+  output.h ../lib/ptable.h object.h pic.tab.h
+main.o : main.cc pic.h ../lib/assert.h ../lib/cset.h ../lib/lib.h \
+  ../lib/stringclass.h ../lib/errarg.h ../lib/error.h position.h text.h \
+  output.h
+object.o : object.cc pic.h ../lib/assert.h ../lib/cset.h ../lib/lib.h \
+  ../lib/stringclass.h ../lib/errarg.h ../lib/error.h position.h text.h \
+  output.h ../lib/ptable.h object.h
+common.o : common.cc pic.h ../lib/assert.h ../lib/cset.h ../lib/lib.h \
+  ../lib/stringclass.h ../lib/errarg.h ../lib/error.h position.h text.h \
+  output.h common.h
+troff.o : troff.cc pic.h ../lib/assert.h ../lib/cset.h ../lib/lib.h \
+  ../lib/stringclass.h ../lib/errarg.h ../lib/error.h position.h text.h \
+  output.h common.h
+tex.o : tex.cc pic.h ../lib/assert.h ../lib/cset.h ../lib/lib.h \
+  ../lib/stringclass.h ../lib/errarg.h ../lib/error.h position.h text.h \
+  output.h common.h
diff --git a/contrib/groff/pic/lex.cc b/contrib/groff/pic/lex.cc
new file mode 100644
index 000000000000..920938d538e1
--- /dev/null
+++ b/contrib/groff/pic/lex.cc
@@ -0,0 +1,1939 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "pic.h"
+#include "ptable.h"
+#include "object.h"
+#include "pic.tab.h"
+
+declare_ptable(char)
+implement_ptable(char)
+
+PTABLE(char) macro_table;
+
+class macro_input : public input {
+  char *s;
+  char *p;
+public:
+  macro_input(const char *);
+  ~macro_input();
+  int get();
+  int peek();
+};
+
+class argument_macro_input : public input {
+  char *s;
+  char *p;
+  char *ap;
+  int argc;
+  char *argv[9];
+public:
+  argument_macro_input(const char *, int, char **);
+  ~argument_macro_input();
+  int get();
+  int peek();
+};
+
+input::input() : next(0)
+{
+}
+
+input::~input()
+{
+}
+
+int input::get_location(const char **, int *)
+{
+  return 0;
+}
+
+file_input::file_input(FILE *f, const char *fn)
+: lineno(0), ptr(""), filename(fn)
+{
+  fp = f;
+}
+
+file_input::~file_input()
+{
+  fclose(fp);
+}
+
+int file_input::read_line()
+{
+  for (;;) {
+    line.clear();
+    lineno++;
+    for (;;) {
+      int c = getc(fp);
+      if (c == EOF)
+	break;
+      else if (illegal_input_char(c))
+	lex_error("illegal input character code %1", c);
+      else {
+	line += char(c);
+	if (c == '\n') 
+	  break;
+      }
+    }
+    if (line.length() == 0)
+      return 0;
+    if (!(line.length() >= 3 && line[0] == '.' && line[1] == 'P'
+	  && (line[2] == 'S' || line[2] == 'E' || line[2] == 'F')
+	  && (line.length() == 3 || line[3] == ' ' || line[3] == '\n'
+	      || compatible_flag))) {
+      line += '\0';
+      ptr = line.contents();
+      return 1;
+    }
+  }
+}
+
+int file_input::get()
+{
+  if (*ptr != '\0' || read_line())
+    return (unsigned char)*ptr++;
+  else
+    return EOF;
+}
+
+int file_input::peek()
+{
+  if (*ptr != '\0' || read_line())
+    return (unsigned char)*ptr;
+  else
+    return EOF;
+}
+
+int file_input::get_location(const char **fnp, int *lnp)
+{
+  *fnp = filename;
+  *lnp = lineno;
+  return 1;
+}
+
+macro_input::macro_input(const char *str)
+{
+  p = s = strsave(str);
+}
+
+macro_input::~macro_input()
+{
+  a_delete s;
+}
+
+int macro_input::get()
+{
+  if (p == 0 || *p == '\0')
+    return EOF;
+  else
+    return (unsigned char)*p++;
+}
+
+int macro_input::peek()
+{
+  if (p == 0 || *p == '\0')
+    return EOF;
+  else
+    return (unsigned char)*p;
+}
+
+// Character representing $1.  Must be illegal input character.
+#define ARG1 14
+
+char *process_body(const char *body)
+{
+  char *s = strsave(body);
+  int j = 0;
+  for (int i = 0; s[i] != '\0'; i++)
+    if (s[i] == '$' && s[i+1] >= '0' && s[i+1] <= '9') {
+      if (s[i+1] != '0')
+	s[j++] = ARG1 + s[++i] - '1';
+    }
+    else
+      s[j++] = s[i];
+  s[j] = '\0';
+  return s;
+}
+
+
+argument_macro_input::argument_macro_input(const char *body, int ac, char **av)
+: argc(ac), ap(0)
+{
+  for (int i = 0; i < argc; i++)
+    argv[i] = av[i];
+  p = s = process_body(body);
+}
+
+
+argument_macro_input::~argument_macro_input()
+{
+  for (int i = 0; i < argc; i++)
+    a_delete argv[i];
+  a_delete s;
+}
+
+int argument_macro_input::get()
+{
+  if (ap) {
+    if (*ap != '\0')
+      return (unsigned char)*ap++;
+    ap = 0;
+  }
+  if (p == 0)
+    return EOF;
+  while (*p >= ARG1 && *p <= ARG1 + 8) {
+    int i = *p++ - ARG1;
+    if (i < argc && argv[i] != 0 && argv[i][0] != '\0') {
+      ap = argv[i];
+      return (unsigned char)*ap++;
+    }
+  }
+  if (*p == '\0')
+    return EOF;
+  return (unsigned char)*p++;
+}
+
+int argument_macro_input::peek()
+{
+  if (ap) {
+    if (*ap != '\0')
+      return (unsigned char)*ap;
+    ap = 0;
+  }
+  if (p == 0)
+    return EOF;
+  while (*p >= ARG1 && *p <= ARG1 + 8) {
+    int i = *p++ - ARG1;
+    if (i < argc && argv[i] != 0 && argv[i][0] != '\0') {
+      ap = argv[i];
+      return (unsigned char)*ap;
+    }
+  }
+  if (*p == '\0')
+    return EOF;
+  return (unsigned char)*p;
+}
+
+class input_stack {
+  static input *current_input;
+  static int bol_flag;
+public:
+  static void push(input *);
+  static void clear();
+  static int get_char();
+  static int peek_char();
+  static int get_location(const char **fnp, int *lnp);
+  static void push_back(unsigned char c, int was_bol = 0);
+  static int bol();
+};
+
+input *input_stack::current_input = 0;
+int input_stack::bol_flag = 0;
+
+inline int input_stack::bol()
+{
+  return bol_flag;
+}
+
+void input_stack::clear()
+{
+  while (current_input != 0) {
+    input *tem = current_input;
+    current_input = current_input->next;
+    delete tem;
+  }
+  bol_flag = 1;
+}
+
+void input_stack::push(input *in)
+{
+  in->next = current_input;
+  current_input = in;
+}
+
+void lex_init(input *top)
+{
+  input_stack::clear();
+  input_stack::push(top);
+}
+
+void lex_cleanup()
+{
+  while (input_stack::get_char() != EOF)
+    ;
+}
+
+int input_stack::get_char()
+{
+  while (current_input != 0) {
+    int c = current_input->get();
+    if (c != EOF) {
+      bol_flag = c == '\n';
+      return c;
+    }
+    // don't pop the top-level input off the stack
+    if (current_input->next == 0)
+      return EOF;
+    input *tem = current_input;
+    current_input = current_input->next;
+    delete tem;
+  }
+  return EOF;
+}
+
+int input_stack::peek_char()
+{
+  while (current_input != 0) {
+    int c = current_input->peek();
+    if (c != EOF)
+      return c;
+    if (current_input->next == 0)
+      return EOF;
+    input *tem = current_input;
+    current_input = current_input->next;
+    delete tem;
+  }
+  return EOF;
+}
+
+class char_input : public input {
+  int c;
+public:
+  char_input(int);
+  int get();
+  int peek();
+};
+
+char_input::char_input(int n) : c((unsigned char)n)
+{
+}
+
+int char_input::get()
+{
+  int n = c;
+  c = EOF;
+  return n;
+}
+
+int char_input::peek()
+{
+  return c;
+}
+
+void input_stack::push_back(unsigned char c, int was_bol)
+{
+  push(new char_input(c));
+  bol_flag = was_bol;
+}
+
+int input_stack::get_location(const char **fnp, int *lnp)
+{
+  for (input *p = current_input; p; p = p->next)
+    if (p->get_location(fnp, lnp))
+      return 1;
+  return 0;
+}
+
+string context_buffer;
+
+string token_buffer;
+double token_double;
+int token_int;
+
+void interpolate_macro_with_args(const char *body)
+{
+  char *argv[9];
+  int argc = 0;
+  int i;
+  for (i = 0; i < 9; i++)
+    argv[i] = 0;
+  int level = 0;
+  int c;
+  enum { NORMAL, IN_STRING, IN_STRING_QUOTED } state = NORMAL;
+  do {
+    token_buffer.clear();
+    for (;;) {
+      c = input_stack::get_char();
+      if (c == EOF) {
+	lex_error("end of input while scanning macro arguments");
+	break;
+      }
+      if (state == NORMAL && level == 0 && (c == ',' || c == ')')) {
+	if (token_buffer.length() > 0) {
+	  token_buffer +=  '\0';
+	  argv[argc] = strsave(token_buffer.contents());
+	}
+	// for `foo()', argc = 0
+	if (argc > 0 || c != ')' || i > 0)
+	  argc++;
+	break;
+      }
+      token_buffer += char(c);
+      switch (state) {
+      case NORMAL:
+	if (c == '"')
+	  state = IN_STRING;
+	else if (c == '(')
+	  level++;
+	else if (c == ')')
+	  level--;
+	break;
+      case IN_STRING:
+	if (c == '"')
+	  state = NORMAL;
+	else if (c == '\\')
+	  state = IN_STRING_QUOTED;
+	break;
+      case IN_STRING_QUOTED:
+	state = IN_STRING;
+	break;
+      }
+    }
+  } while (c != ')' && c != EOF);
+  input_stack::push(new argument_macro_input(body, argc, argv));
+}
+
+static int docmp(const char *s1, int n1, const char *s2, int n2)
+{
+  if (n1 < n2) {
+    int r = memcmp(s1, s2, n1);
+    return r ? r : -1;
+  }
+  else if (n1 > n2) {
+    int r = memcmp(s1, s2, n2);
+    return r ? r : 1;
+  }
+  else
+    return memcmp(s1, s2, n1);
+}
+
+int lookup_keyword(const char *str, int len)
+{
+  static struct keyword {
+    const char *name;
+    int token;
+  } table[] = {
+    { "Here", HERE },
+    { "above", ABOVE },
+    { "aligned", ALIGNED },
+    { "and", AND },
+    { "arc", ARC },
+    { "arrow", ARROW },
+    { "at", AT },
+    { "atan2", ATAN2 },
+    { "below", BELOW },
+    { "between", BETWEEN },
+    { "bottom", BOTTOM },
+    { "box", BOX },
+    { "by", BY },
+    { "ccw", CCW },
+    { "center", CENTER },
+    { "chop", CHOP },
+    { "circle", CIRCLE },
+    { "command", COMMAND },
+    { "copy", COPY },
+    { "cos", COS },
+    { "cw", CW },
+    { "dashed", DASHED },
+    { "define", DEFINE },
+    { "diam", DIAMETER },
+    { "diameter", DIAMETER },
+    { "do", DO },
+    { "dotted", DOTTED },
+    { "down", DOWN },
+    { "ellipse", ELLIPSE },
+    { "else", ELSE },
+    { "end", END },
+    { "exp", EXP },
+    { "fill", FILL },
+    { "filled", FILL },
+    { "for", FOR },
+    { "from", FROM },
+    { "height", HEIGHT },
+    { "ht", HEIGHT },
+    { "if", IF },
+    { "int", INT },
+    { "invis", INVISIBLE },
+    { "invisible", INVISIBLE },
+    { "last", LAST },
+    { "left", LEFT },
+    { "line", LINE },
+    { "ljust", LJUST },
+    { "log", LOG },
+    { "lower", LOWER },
+    { "max", K_MAX },
+    { "min", K_MIN },
+    { "move", MOVE },
+    { "of", OF },
+    { "plot", PLOT },
+    { "print", PRINT },
+    { "rad", RADIUS },
+    { "radius", RADIUS },
+    { "rand", RAND },
+    { "reset", RESET },
+    { "right", RIGHT },
+    { "rjust", RJUST },
+    { "same", SAME },
+    { "sh", SH },
+    { "sin", SIN },
+    { "spline", SPLINE },
+    { "sprintf", SPRINTF },
+    { "sqrt", SQRT },
+    { "start", START },
+    { "the", THE },
+    { "then", THEN },
+    { "thick", THICKNESS },
+    { "thickness", THICKNESS },
+    { "thru", THRU },
+    { "to", TO },
+    { "top", TOP },
+    { "undef", UNDEF },
+    { "until", UNTIL },
+    { "up", UP },
+    { "upper", UPPER },
+    { "way", WAY },
+    { "wid", WIDTH },
+    { "width", WIDTH },
+    { "with", WITH },
+  };
+  
+  const keyword *start = table;
+  const keyword *end = table + sizeof(table)/sizeof(table[0]);
+  while (start < end) {
+    // start <= target < end
+    const keyword *mid = start + (end - start)/2;
+    
+    int cmp = docmp(str, len, mid->name, strlen(mid->name));
+    if (cmp == 0)
+      return mid->token;
+    if (cmp < 0)
+      end = mid;
+    else
+      start = mid + 1;
+  }
+  return 0;
+}
+
+int get_token_after_dot(int c)
+{
+  // get_token deals with the case where c is a digit
+  switch (c) {
+  case 'h':
+    input_stack::get_char();
+    c = input_stack::peek_char();
+    if (c == 't') {
+      input_stack::get_char();
+      context_buffer = ".ht";
+      return DOT_HT;
+    }
+    else if (c == 'e') {
+      input_stack::get_char();
+      c = input_stack::peek_char();
+      if (c == 'i') {
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 'g') {
+	  input_stack::get_char();
+	  c = input_stack::peek_char();
+	  if (c == 'h') {
+	    input_stack::get_char();
+	    c = input_stack::peek_char();
+	    if (c == 't') {
+	      input_stack::get_char();
+	      context_buffer = ".height";
+	      return DOT_HT;
+	    }
+	    input_stack::push_back('h');
+	  }
+	  input_stack::push_back('g');
+	}
+	input_stack::push_back('i');
+      }
+      input_stack::push_back('e');
+    }
+    input_stack::push_back('h');
+    return '.';
+  case 'x':
+    input_stack::get_char();
+    context_buffer = ".x";
+    return DOT_X;
+  case 'y':
+    input_stack::get_char();
+    context_buffer = ".y";
+    return DOT_Y;
+  case 'c':
+    input_stack::get_char();
+    c = input_stack::peek_char();
+    if (c == 'e') {
+      input_stack::get_char();
+      c = input_stack::peek_char();
+      if (c == 'n') {
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 't') {
+	  input_stack::get_char();
+	  c = input_stack::peek_char();
+	  if (c == 'e') {
+	    input_stack::get_char();
+	    c = input_stack::peek_char();
+	    if (c == 'r') {
+	      input_stack::get_char();
+	      context_buffer = ".center";
+	      return DOT_C;
+	    }
+	    input_stack::push_back('e');
+	  }
+	  input_stack::push_back('t');
+	}
+	input_stack::push_back('n');
+      }
+      input_stack::push_back('e');
+    }
+    context_buffer = ".c";
+    return DOT_C;
+  case 'n':
+    input_stack::get_char();
+    c = input_stack::peek_char();
+    if (c == 'e') {
+      input_stack::get_char();
+      context_buffer = ".ne";
+      return DOT_NE;
+    }
+    else if (c == 'w') {
+      input_stack::get_char();
+      context_buffer = ".nw";
+      return DOT_NW;
+    }
+    else {
+      context_buffer = ".n";
+      return DOT_N;
+    }
+    break;
+  case 'e':
+    input_stack::get_char();
+    c = input_stack::peek_char();
+    if (c == 'n') {
+      input_stack::get_char();
+      c = input_stack::peek_char();
+      if (c == 'd') {
+	input_stack::get_char();
+	context_buffer = ".end";
+	return DOT_END;
+      }
+      input_stack::push_back('n');
+      context_buffer = ".e";
+      return DOT_E;
+    }
+    context_buffer = ".e";
+    return DOT_E;
+  case 'w':
+    input_stack::get_char();
+    c = input_stack::peek_char();
+    if (c == 'i') {
+      input_stack::get_char();
+      c = input_stack::peek_char();
+      if (c == 'd') {
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 't') {
+	  input_stack::get_char();
+	  c = input_stack::peek_char();
+	  if (c == 'h') {
+	    input_stack::get_char();
+	    context_buffer = ".width";
+	    return DOT_WID;
+	  }
+	  input_stack::push_back('t');
+	}
+	context_buffer = ".wid";
+	return DOT_WID;
+      }
+      input_stack::push_back('i');
+    }
+    context_buffer = ".w";
+    return DOT_W;
+  case 's':
+    input_stack::get_char();
+    c = input_stack::peek_char();
+    if (c == 'e') {
+      input_stack::get_char();
+      context_buffer = ".se";
+      return DOT_SE;
+    }
+    else if (c == 'w') {
+      input_stack::get_char();
+      context_buffer = ".sw";
+      return DOT_SW;
+    }
+    else {
+      if (c == 't') {
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 'a') {
+	  input_stack::get_char();
+	  c = input_stack::peek_char();
+	  if (c == 'r') {
+	    input_stack::get_char();
+	    c = input_stack::peek_char();
+	    if (c == 't') {
+	      input_stack::get_char();
+	      context_buffer = ".start";
+	      return DOT_START;
+	    }
+	    input_stack::push_back('r');
+	  }
+	  input_stack::push_back('a');
+	}
+	input_stack::push_back('t');
+      }
+      context_buffer = ".s";
+      return DOT_S;
+    }
+    break;
+  case 't':
+    input_stack::get_char();
+    c = input_stack::peek_char();
+    if (c == 'o') {
+      input_stack::get_char();
+      c = input_stack::peek_char();
+      if (c == 'p') {
+	input_stack::get_char();
+	context_buffer = ".top";
+	return DOT_N;
+      }
+      input_stack::push_back('o');
+    }
+    context_buffer = ".t";
+    return DOT_N;
+  case 'l':
+    input_stack::get_char();
+    c = input_stack::peek_char();
+    if (c == 'e') {
+      input_stack::get_char();
+      c = input_stack::peek_char();
+      if (c == 'f') {
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 't') {
+	  input_stack::get_char();
+	  context_buffer = ".left";
+	  return DOT_W;
+	}
+	input_stack::push_back('f');
+      }
+      input_stack::push_back('e');
+    }
+    context_buffer = ".l";
+    return DOT_W;
+  case 'r':
+    input_stack::get_char();
+    c = input_stack::peek_char();
+    if (c == 'a') {
+      input_stack::get_char();
+      c = input_stack::peek_char();
+      if (c == 'd') {
+	input_stack::get_char();
+	context_buffer = ".rad";
+	return DOT_RAD;
+      }
+      input_stack::push_back('a');
+    }
+    else if (c == 'i') {
+      input_stack::get_char();
+      c = input_stack::peek_char();
+      if (c == 'g') {
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 'h') {
+	  input_stack::get_char();
+	  c = input_stack::peek_char();
+	  if (c == 't') {
+	    input_stack::get_char();
+	    context_buffer = ".right";
+	    return DOT_E;
+	  }
+	  input_stack::push_back('h');
+	}
+	input_stack::push_back('g');
+      }
+      input_stack::push_back('i');
+    }
+    context_buffer = ".r";
+    return DOT_E;
+  case 'b':
+    input_stack::get_char();
+    c = input_stack::peek_char();
+    if (c == 'o') {
+      input_stack::get_char();
+      c = input_stack::peek_char();
+      if (c == 't') {
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 't') {
+	  input_stack::get_char();
+	  c = input_stack::peek_char();
+	  if (c == 'o') {
+	    input_stack::get_char();
+	    c = input_stack::peek_char();
+	    if (c == 'm') {
+	      input_stack::get_char();
+	      context_buffer = ".bottom";
+	      return DOT_S;
+	    }
+	    input_stack::push_back('o');
+	  }
+	  input_stack::push_back('t');
+	}
+	context_buffer = ".bot";
+	return DOT_S;
+      }
+      input_stack::push_back('o');
+    }
+    context_buffer = ".b";
+    return DOT_S;
+  default:
+    context_buffer = '.';
+    return '.';
+  }
+}
+
+int get_token(int lookup_flag)
+{
+  context_buffer.clear();
+  for (;;) {
+    int n = 0;
+    int bol = input_stack::bol();
+    int c = input_stack::get_char();
+    if (bol && c == command_char) {
+      token_buffer.clear();
+      token_buffer += c;
+      // the newline is not part of the token
+      for (;;) {
+	c = input_stack::peek_char();
+	if (c == EOF || c == '\n')
+	  break;
+	input_stack::get_char();
+	token_buffer += char(c);
+      }
+      context_buffer = token_buffer;
+      return COMMAND_LINE;
+    }
+    switch (c) {
+    case EOF:
+      return EOF;
+    case ' ':
+    case '\t':
+      break;
+    case '\\':
+      {
+	int d = input_stack::peek_char();
+	if (d != '\n') {
+	  context_buffer = '\\';
+	  return '\\';
+	}
+	input_stack::get_char();
+	break;
+      }
+    case '#':
+      do {
+	c = input_stack::get_char();
+      } while (c != '\n' && c != EOF);
+      if (c == '\n')
+	context_buffer = '\n';
+      return c;
+    case '"':
+      context_buffer = '"';
+      token_buffer.clear();
+      for (;;) {
+	c = input_stack::get_char();
+	if (c == '\\') {
+	  context_buffer += '\\';
+	  c = input_stack::peek_char();
+	  if (c == '"') {
+	    input_stack::get_char();
+	    token_buffer += '"';
+	    context_buffer += '"';
+	  }
+	  else
+	    token_buffer += '\\';
+	}
+	else if (c == '\n') {
+	  error("newline in string");
+	  break;
+	}
+	else if (c == EOF) {
+	  error("missing `\"'");
+	  break;
+	}
+	else if (c == '"') {
+	  context_buffer += '"';
+	  break;
+	}
+	else {
+	  context_buffer += char(c);
+	  token_buffer += char(c);
+	}
+      }
+      return TEXT;
+    case '0':
+    case '1':
+    case '2':
+    case '3':
+    case '4':
+    case '5':
+    case '6':
+    case '7':
+    case '8':
+    case '9':
+      {   
+	int overflow = 0;
+	n = 0;
+	for (;;) {
+	  if (n > (INT_MAX - 9)/10) {
+	    overflow = 1;
+	    break;
+	  }
+	  n *= 10;
+	  n += c - '0';
+	  context_buffer += char(c);
+	  c = input_stack::peek_char();
+	  if (c == EOF || !csdigit(c))
+	    break;
+	  c = input_stack::get_char();
+	}
+	token_double = n;
+	if (overflow) {
+	  for (;;) {
+	    token_double *= 10.0;
+	    token_double += c - '0';
+	    context_buffer += char(c);
+	    c = input_stack::peek_char();
+	    if (c == EOF || !csdigit(c))
+	      break;
+	    c = input_stack::get_char();
+	  }
+	  // if somebody asks for 1000000000000th, we will silently
+	  // give them INT_MAXth
+	  double temp = token_double; // work around gas 1.34/sparc bug
+	  if (token_double > INT_MAX)
+	    n = INT_MAX;
+	  else
+	    n = int(temp);
+	}
+      }
+      switch (c) {
+      case 'i':
+      case 'I':
+	context_buffer += char(c);
+	input_stack::get_char();
+	return NUMBER;
+      case '.':
+	{
+	  context_buffer += '.';
+	  input_stack::get_char();
+	got_dot:
+	  double factor = 1.0;
+	  for (;;) {
+	    c = input_stack::peek_char();
+	    if (!c == EOF || !csdigit(c))
+	      break;
+	    input_stack::get_char();
+	    context_buffer += char(c);
+	    factor /= 10.0;
+	    if (c != '0')
+	      token_double += factor*(c - '0');
+	  }
+	  if (c != 'e' && c != 'E') {
+	    if (c == 'i' || c == 'I') {
+	      context_buffer += char(c);
+	      input_stack::get_char();
+	    }
+	    return NUMBER;
+	  }
+	}
+	// fall through
+      case 'e':
+      case 'E':
+	{
+	  int echar = c;
+	  input_stack::get_char();
+	  c = input_stack::peek_char();
+	  int sign = '+';
+	  if (c == '+' || c == '-') {
+	    sign = c;
+	    input_stack::get_char();
+	    c = input_stack::peek_char();
+	    if (c == EOF || !csdigit(c)) {
+	      input_stack::push_back(sign);
+	      input_stack::push_back(echar);
+	      return NUMBER;
+	    }
+	    context_buffer += char(echar);
+	    context_buffer += char(sign);
+	  }
+	  else {
+	    if (c == EOF || !csdigit(c)) {
+	      input_stack::push_back(echar);
+	      return NUMBER;
+	    }
+	    context_buffer += char(echar);
+	  }
+	  input_stack::get_char();
+	  context_buffer += char(c);
+	  n = c - '0';
+	  for (;;) {
+	    c = input_stack::peek_char();
+	    if (c == EOF || !csdigit(c))
+	      break;
+	    input_stack::get_char();
+	    context_buffer += char(c);
+	    n = n*10 + (c - '0');
+	  }
+	  if (sign == '-')
+	    n = -n;
+	  if (c == 'i' || c == 'I') {
+	    context_buffer += char(c);
+	    input_stack::get_char();
+	  }
+	  token_double *= pow(10.0, n);
+	  return NUMBER;
+	}
+      case 'n':
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 'd') {
+	  input_stack::get_char();
+	  token_int = n;
+	  context_buffer += "nd";
+	  return ORDINAL;
+	}
+	input_stack::push_back('n');
+	return NUMBER;
+      case 'r':
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 'd') {
+	  input_stack::get_char();
+	  token_int = n;
+	  context_buffer += "rd";
+	  return ORDINAL;
+	}
+	input_stack::push_back('r');
+	return NUMBER;
+      case 't':
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 'h') {
+	  input_stack::get_char();
+	  token_int = n;
+	  context_buffer += "th";
+	  return ORDINAL;
+	}
+	input_stack::push_back('t');
+	return NUMBER;
+      case 's':
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == 't') {
+	  input_stack::get_char();
+	  token_int = n;
+	  context_buffer += "st";
+	  return ORDINAL;
+	}
+	input_stack::push_back('s');
+	return NUMBER;
+      default:
+	return NUMBER;
+      }
+      break;
+    case '\'':
+      {
+	c = input_stack::peek_char();
+	if (c == 't') {
+	  input_stack::get_char();
+	  c = input_stack::peek_char();
+	  if (c == 'h') {
+	    input_stack::get_char();
+	    context_buffer = "'th";
+	    return TH;
+	  }
+	  else
+	    input_stack::push_back('t');
+	}
+	context_buffer = "'";
+	return '\'';
+      }
+    case '.':
+      {
+	c = input_stack::peek_char();
+	if (c != EOF && csdigit(c)) {
+	  n = 0;
+	  token_double = 0.0;
+	  context_buffer = '.';
+	  goto got_dot;
+	}
+	return get_token_after_dot(c);
+      }
+    case '<':
+      c = input_stack::peek_char();
+      if (c == '-') {
+	input_stack::get_char();
+	c = input_stack::peek_char();
+	if (c == '>') {
+	  input_stack::get_char();
+	  context_buffer = "<->";
+	  return DOUBLE_ARROW_HEAD;
+	}
+	context_buffer = "<-";
+	return LEFT_ARROW_HEAD;
+      }
+      else if (c == '=') {
+	input_stack::get_char();
+	context_buffer = "<=";
+	return LESSEQUAL;
+      }
+      context_buffer = "<";
+      return '<';
+    case '-':
+      c = input_stack::peek_char();
+      if (c == '>') {
+	input_stack::get_char();
+	context_buffer = "->";
+	return RIGHT_ARROW_HEAD;
+      }
+      context_buffer = "-";
+      return '-';
+    case '!':
+      c = input_stack::peek_char();
+      if (c == '=') {
+	input_stack::get_char();
+	context_buffer = "!=";
+	return NOTEQUAL;
+      }
+      context_buffer = "!";
+      return '!';
+    case '>':
+      c = input_stack::peek_char();
+      if (c == '=') {
+	input_stack::get_char();
+	context_buffer = ">=";
+	return GREATEREQUAL;
+      }
+      context_buffer = ">";
+      return '>';
+    case '=':
+      c = input_stack::peek_char();
+      if (c == '=') {
+	input_stack::get_char();
+	context_buffer = "==";
+	return EQUALEQUAL;
+      }
+      context_buffer = "=";
+      return '=';
+    case '&':
+      c = input_stack::peek_char();
+      if (c == '&') {
+	input_stack::get_char();
+	context_buffer = "&&";
+	return ANDAND;
+      }
+      context_buffer = "&";
+      return '&';
+    case '|':
+      c = input_stack::peek_char();
+      if (c == '|') {
+	input_stack::get_char();
+	context_buffer = "||";
+	return OROR;
+      }
+      context_buffer = "|";
+      return '|';
+    default:
+      if (c != EOF && csalpha(c)) {
+	token_buffer.clear();
+	token_buffer = c;
+	for (;;) {
+	  c = input_stack::peek_char();
+	  if (c == EOF || (!csalnum(c) && c != '_'))
+	    break;
+	  input_stack::get_char();
+	  token_buffer += char(c);
+	}
+	int tok = lookup_keyword(token_buffer.contents(),
+				 token_buffer.length());
+	if (tok != 0) {
+	  context_buffer = token_buffer;
+	  return tok;
+	}
+	char *def = 0;
+	if (lookup_flag) {
+	  token_buffer += '\0';
+	  def = macro_table.lookup(token_buffer.contents());
+	  token_buffer.set_length(token_buffer.length() - 1);
+	  if (def) {
+	    if (c == '(') {
+	      input_stack::get_char();
+	      interpolate_macro_with_args(def);
+	    }
+	    else
+	      input_stack::push(new macro_input(def));
+	  }
+	}
+	if (!def) {
+	  context_buffer = token_buffer;
+	  if (csupper(token_buffer[0]))
+	    return LABEL;
+	  else
+	    return VARIABLE;
+	}
+      }
+      else {
+	context_buffer = char(c);
+	return (unsigned char)c;
+      }
+      break;
+    }
+  }
+}
+
+int get_delimited()
+{
+  token_buffer.clear();
+  int c = input_stack::get_char();
+  while (c == ' ' || c == '\t' || c == '\n')
+    c = input_stack::get_char();
+  if (c == EOF) {
+    lex_error("missing delimiter");
+    return 0;
+  }
+  context_buffer = char(c);
+  int had_newline = 0;
+  int start = c;
+  int level = 0;
+  enum { NORMAL, IN_STRING, IN_STRING_QUOTED, DELIM_END } state = NORMAL;
+  for (;;) {
+    c = input_stack::get_char();
+    if (c == EOF) {
+      lex_error("missing closing delimiter");
+      return 0;
+    }
+    if (c == '\n')
+      had_newline = 1;
+    else if (!had_newline)
+      context_buffer += char(c);
+    switch (state) {
+    case NORMAL:
+      if (start == '{') {
+	if (c == '{') {
+	  level++;
+	  break;
+	}
+	if (c == '}') {
+	  if (--level < 0)
+	    state = DELIM_END;
+	  break;
+	}
+      }
+      else {
+	if (c == start) {
+	  state = DELIM_END;
+	  break;
+	}
+      }
+      if (c == '"')
+	state = IN_STRING;
+      break;
+    case IN_STRING_QUOTED:
+      if (c == '\n')
+	state = NORMAL;
+      else
+	state = IN_STRING;
+      break;
+    case IN_STRING:
+      if (c == '"' || c == '\n')
+	state = NORMAL;
+      else if (c == '\\')
+	state = IN_STRING_QUOTED;
+      break;
+    case DELIM_END:
+      // This case it just to shut cfront 2.0 up.
+    default:
+      assert(0);
+    }
+    if (state == DELIM_END)
+      break;
+    token_buffer += c;
+  }
+  return 1;
+}
+
+void do_define()
+{
+  int t = get_token(0);		// do not expand what we are defining
+  if (t != VARIABLE && t != LABEL) {
+    lex_error("can only define variable or placename");
+    return;
+  }
+  token_buffer += '\0';
+  string nm = token_buffer;
+  const char *name = nm.contents();
+  if (!get_delimited())
+    return;
+  token_buffer += '\0';
+  macro_table.define(name, strsave(token_buffer.contents()));
+}
+
+void do_undef()
+{
+  int t = get_token(0);		// do not expand what we are undefining
+  if (t != VARIABLE && t != LABEL) {
+    lex_error("can only define variable or placename");
+    return;
+  }
+  token_buffer += '\0';
+  macro_table.define(token_buffer.contents(), 0);
+}
+
+
+class for_input : public input {
+  char *var;
+  char *body;
+  double to;
+  int by_is_multiplicative;
+  double by;
+  const char *p;
+  int done_newline;
+public:
+  for_input(char *, double, int, double, char *);
+  ~for_input();
+  int get();
+  int peek();
+};
+
+for_input::for_input(char *vr, double t, int bim, double b, char *bd)
+: var(vr), to(t), by_is_multiplicative(bim), by(b), body(bd), p(body),
+  done_newline(0)
+{
+}
+
+for_input::~for_input()
+{
+  a_delete var;
+  a_delete body;
+}
+
+int for_input::get()
+{
+  if (p == 0)
+    return EOF;
+  for (;;) {
+    if (*p != '\0')
+      return (unsigned char)*p++;
+    if (!done_newline) {
+      done_newline = 1;
+      return '\n';
+    }
+    double val;
+    if (!lookup_variable(var, &val)) {
+      lex_error("body of `for' terminated enclosing block");
+      return EOF;
+    }
+    if (by_is_multiplicative)
+      val *= by;
+    else
+      val += by;
+    define_variable(var, val);
+    if (val > to) {
+      p = 0;
+      return EOF;
+    }
+    p = body;
+    done_newline = 0;
+  }
+}
+
+int for_input::peek()
+{
+  if (p == 0)
+    return EOF;
+  if (*p != '\0')
+    return (unsigned char)*p;
+  if (!done_newline)
+    return '\n';
+  double val;
+  if (!lookup_variable(var, &val))
+    return EOF;
+  if (by_is_multiplicative) {
+    if (val * by > to)
+      return EOF;
+  }
+  else {
+    if (val + by > to)
+      return EOF;
+  }
+  if (*body == '\0')
+    return EOF;
+  return (unsigned char)*body;
+}
+
+void do_for(char *var, double from, double to, int by_is_multiplicative,
+	    double by, char *body)
+{
+  define_variable(var, from);
+  if (from <= to)
+    input_stack::push(new for_input(var, to, by_is_multiplicative, by, body));
+}
+
+
+void do_copy(const char *filename)
+{
+  errno = 0;
+  FILE *fp = fopen(filename, "r");
+  if (fp == 0) {
+    lex_error("can't open `%1': %2", filename, strerror(errno));
+    return;
+  }
+  input_stack::push(new file_input(fp, filename));
+}
+
+class copy_thru_input : public input {
+  int done;
+  char *body;
+  char *until;
+  const char *p;
+  const char *ap;
+  int argv[9];
+  int argc;
+  string line;
+  int get_line();
+  virtual int inget() = 0;
+public:
+  copy_thru_input(const char *b, const char *u);
+  ~copy_thru_input();
+  int get();
+  int peek();
+};
+
+class copy_file_thru_input : public copy_thru_input {
+  input *in;
+public:
+  copy_file_thru_input(input *, const char *b, const char *u);
+  ~copy_file_thru_input();
+  int inget();
+};
+
+copy_file_thru_input::copy_file_thru_input(input *i, const char *b,
+					   const char *u)
+: in(i), copy_thru_input(b, u)
+{
+}
+
+copy_file_thru_input::~copy_file_thru_input()
+{
+  delete in;
+}
+
+int copy_file_thru_input::inget()
+{
+  if (!in)
+    return EOF;
+  else
+    return in->get();
+}
+
+class copy_rest_thru_input : public copy_thru_input {
+public:
+  copy_rest_thru_input(const char *, const char *u);
+  int inget();
+};
+
+copy_rest_thru_input::copy_rest_thru_input(const char *b, const char *u)
+: copy_thru_input(b, u)
+{
+}
+
+int copy_rest_thru_input::inget()
+{
+  while (next != 0) {
+    int c = next->get();
+    if (c != EOF)
+      return c;
+    if (next->next == 0)
+      return EOF;
+    input *tem = next;
+    next = next->next;
+    delete tem;
+  }
+  return EOF;
+
+}
+
+copy_thru_input::copy_thru_input(const char *b, const char *u)
+: done(0)
+{
+  ap = 0;
+  body = process_body(b);
+  p = 0;
+  until = strsave(u);
+}
+
+
+copy_thru_input::~copy_thru_input()
+{
+  a_delete body;
+  a_delete until;
+}
+
+int copy_thru_input::get()
+{
+  if (ap) {
+    if (*ap != '\0')
+      return (unsigned char)*ap++;
+    ap = 0;
+  }
+  for (;;) {
+    if (p == 0) {
+      if (!get_line())
+	break;
+      p = body;
+    }
+    if (*p == '\0') {
+      p = 0;
+      return '\n';
+    }
+    while (*p >= ARG1 && *p <= ARG1 + 8) {
+      int i = *p++ - ARG1;
+      if (i < argc && line[argv[i]] != '\0') {
+	ap = line.contents() + argv[i];
+	return (unsigned char)*ap++;
+      }
+    }
+    if (*p != '\0')
+      return (unsigned char)*p++;
+  }
+  return EOF;
+}
+
+int copy_thru_input::peek()
+{
+  if (ap) {
+    if (*ap != '\0')
+      return (unsigned char)*ap;
+    ap = 0;
+  }
+  for (;;) {
+    if (p == 0) {
+      if (!get_line())
+	break;
+      p = body;
+    }
+    if (*p == '\0')
+      return '\n';
+    while (*p >= ARG1 && *p <= ARG1 + 8) {
+      int i = *p++ - ARG1;
+      if (i < argc && line[argv[i]] != '\0') {
+	ap = line.contents() + argv[i];
+	return (unsigned char)*ap;
+      }
+    }
+    if (*p != '\0')
+      return (unsigned char)*p;
+  }
+  return EOF;
+}
+
+int copy_thru_input::get_line()
+{
+  if (done)
+    return 0;
+  line.clear();
+  argc = 0;
+  int c = inget();
+  for (;;) {
+    while (c == ' ')
+      c = inget();
+    if (c == EOF || c == '\n')
+      break;
+    if (argc == 9) {
+      do {
+	c = inget();
+      } while (c != '\n' && c != EOF);
+      break;
+    }
+    argv[argc++] = line.length();
+    do {
+      line += char(c);
+      c = inget();
+    } while (c != ' ' && c != '\n');
+    line += '\0';
+  }
+  if (until != 0 && argc > 0 && strcmp(&line[argv[0]], until) == 0) {
+    done = 1;
+    return 0;
+  }
+  return argc > 0 || c == '\n';
+}
+
+class simple_file_input : public input {
+  const char *filename;
+  int lineno;
+  FILE *fp;
+public:
+  simple_file_input(FILE *, const char *);
+  ~simple_file_input();
+  int get();
+  int peek();
+  int get_location(const char **, int *);
+};
+
+simple_file_input::simple_file_input(FILE *p, const char *s)
+: filename(s), fp(p), lineno(1)
+{
+}
+
+simple_file_input::~simple_file_input()
+{
+  // don't delete the filename
+  fclose(fp);
+}
+
+int simple_file_input::get()
+{
+  int c = getc(fp);
+  while (illegal_input_char(c)) {
+    error("illegal input character code %1", c);
+    c = getc(fp);
+  }
+  if (c == '\n')
+    lineno++;
+  return c;
+}
+
+int simple_file_input::peek()
+{
+  int c = getc(fp);
+  while (illegal_input_char(c)) {
+    error("illegal input character code %1", c);
+    c = getc(fp);
+  }
+  if (c != EOF)
+    ungetc(c, fp);
+  return c;
+}
+
+int simple_file_input::get_location(const char **fnp, int *lnp)
+{
+  *fnp = filename;
+  *lnp = lineno;
+  return 1;
+}
+
+
+void copy_file_thru(const char *filename, const char *body, const char *until)
+{
+  errno = 0;
+  FILE *fp = fopen(filename, "r");
+  if (fp == 0) {
+    lex_error("can't open `%1': %2", filename, strerror(errno));
+    return;
+  }
+  input *in = new copy_file_thru_input(new simple_file_input(fp, filename),
+				       body, until);
+  input_stack::push(in);
+}
+
+void copy_rest_thru(const char *body, const char *until)
+{
+  input_stack::push(new copy_rest_thru_input(body, until));
+}
+
+void push_body(const char *s)
+{
+  input_stack::push(new char_input('\n'));
+  input_stack::push(new macro_input(s));
+}
+
+int delim_flag = 0;
+
+char *get_thru_arg()
+{
+  int c = input_stack::peek_char();
+  while (c == ' ') {
+    input_stack::get_char();
+    c = input_stack::peek_char();
+  }
+  if (c != EOF && csalpha(c)) {
+    // looks like a macro
+    input_stack::get_char();
+    token_buffer = c;
+    for (;;) {
+      c = input_stack::peek_char();
+      if (c == EOF || (!csalnum(c) && c != '_'))
+	break;
+      input_stack::get_char();
+      token_buffer += char(c);
+    }
+    context_buffer = token_buffer;
+    token_buffer += '\0';
+    char *def = macro_table.lookup(token_buffer.contents());
+    if (def)
+      return strsave(def);
+    // I guess it wasn't a macro after all; so push the macro name back.
+    // -2 because we added a '\0'
+    for (int i = token_buffer.length() - 2; i >= 0; i--)
+      input_stack::push_back(token_buffer[i]);
+  }
+  if (get_delimited()) {
+    token_buffer += '\0';
+    return strsave(token_buffer.contents());
+  }
+  else
+    return 0;
+}
+
+int lookahead_token = -1;
+string old_context_buffer;
+
+void do_lookahead()
+{
+  if (lookahead_token == -1) {
+    old_context_buffer = context_buffer;
+    lookahead_token = get_token(1);
+  }
+}
+
+int yylex()
+{
+  if (delim_flag) {
+    assert(lookahead_token == -1);
+    if (delim_flag == 2) {
+      if ((yylval.str = get_thru_arg()) != 0)
+	return DELIMITED;
+      else
+	return 0;
+    }
+    else {
+      if (get_delimited()) {
+	token_buffer += '\0';
+	yylval.str = strsave(token_buffer.contents());
+	return DELIMITED;
+      }
+      else
+	return 0;
+    }
+  }
+  for (;;) {
+    int t;
+    if (lookahead_token >= 0) {
+      t = lookahead_token;
+      lookahead_token = -1;
+    }
+    else
+      t = get_token(1);
+    switch (t) {
+    case '\n':
+      return ';';
+    case EOF:
+      return 0;
+    case DEFINE:
+      do_define();
+      break;
+    case UNDEF:
+      do_undef();
+      break;
+    case ORDINAL:
+      yylval.n = token_int;
+      return t;
+    case NUMBER:
+      yylval.x = token_double;
+      return t;
+    case COMMAND_LINE:
+    case TEXT:
+      token_buffer += '\0';
+      if (!input_stack::get_location(&yylval.lstr.filename,
+				     &yylval.lstr.lineno)) {
+	yylval.lstr.filename = 0;
+	yylval.lstr.lineno = -1;
+      }
+      yylval.lstr.str = strsave(token_buffer.contents());
+      return t;
+    case LABEL:
+    case VARIABLE:
+      token_buffer += '\0';
+      yylval.str = strsave(token_buffer.contents());
+      return t;
+    case LEFT:
+      // change LEFT to LEFT_CORNER when followed by OF
+      old_context_buffer = context_buffer;
+      lookahead_token = get_token(1);
+      if (lookahead_token == OF)
+	return LEFT_CORNER;
+      else
+	return t;
+    case RIGHT:
+      // change RIGHT to RIGHT_CORNER when followed by OF
+      old_context_buffer = context_buffer;
+      lookahead_token = get_token(1);
+      if (lookahead_token == OF)
+	return RIGHT_CORNER;
+      else
+	return t;
+    case UPPER:
+      // recognise UPPER only before LEFT or RIGHT
+      old_context_buffer = context_buffer;
+      lookahead_token = get_token(1);
+      if (lookahead_token != LEFT && lookahead_token != RIGHT) {
+	yylval.str = strsave("upper");
+	return VARIABLE;
+      }
+      else
+	return t;
+    case LOWER:
+      // recognise LOWER only before LEFT or RIGHT
+      old_context_buffer = context_buffer;
+      lookahead_token = get_token(1);
+      if (lookahead_token != LEFT && lookahead_token != RIGHT) {
+	yylval.str = strsave("lower");
+	return VARIABLE;
+      }
+      else
+	return t;
+    case TOP:
+      // recognise TOP only before OF
+      old_context_buffer = context_buffer;
+      lookahead_token = get_token(1);
+      if (lookahead_token != OF) {
+	yylval.str = strsave("top");
+	return VARIABLE;
+      }
+      else
+	return t;
+    case BOTTOM:
+      // recognise BOTTOM only before OF
+      old_context_buffer = context_buffer;
+      lookahead_token = get_token(1);
+      if (lookahead_token != OF) {
+	yylval.str = strsave("bottom");
+	return VARIABLE;
+      }
+      else
+	return t;
+    case CENTER:
+      // recognise CENTER only before OF
+      old_context_buffer = context_buffer;
+      lookahead_token = get_token(1);
+      if (lookahead_token != OF) {
+	yylval.str = strsave("center");
+	return VARIABLE;
+      }
+      else
+	return t;
+    case START:
+      // recognise START only before OF
+      old_context_buffer = context_buffer;
+      lookahead_token = get_token(1);
+      if (lookahead_token != OF) {
+	yylval.str = strsave("start");
+	return VARIABLE;
+      }
+      else
+	return t;
+    case END:
+      // recognise END only before OF
+      old_context_buffer = context_buffer;
+      lookahead_token = get_token(1);
+      if (lookahead_token != OF) {
+	yylval.str = strsave("end");
+	return VARIABLE;
+      }
+      else
+	return t;
+    default:
+      return t;
+    }
+  }
+}
+
+void lex_error(const char *message,
+	       const errarg &arg1,
+	       const errarg &arg2,
+	       const errarg &arg3)
+{
+  const char *filename;
+  int lineno;
+  if (!input_stack::get_location(&filename, &lineno))
+    error(message, arg1, arg2, arg3);
+  else
+    error_with_file_and_line(filename, lineno, message, arg1, arg2, arg3);
+}
+
+void lex_warning(const char *message,
+		 const errarg &arg1,
+		 const errarg &arg2,
+		 const errarg &arg3)
+{
+  const char *filename;
+  int lineno;
+  if (!input_stack::get_location(&filename, &lineno))
+    warning(message, arg1, arg2, arg3);
+  else
+    warning_with_file_and_line(filename, lineno, message, arg1, arg2, arg3);
+}
+
+void yyerror(const char *s)
+{
+  const char *filename;
+  int lineno;
+  const char *context = 0;
+  if (lookahead_token == -1) {
+    if (context_buffer.length() > 0) {
+      context_buffer += '\0';
+      context = context_buffer.contents();
+    }
+  }
+  else {
+    if (old_context_buffer.length() > 0) {
+      old_context_buffer += '\0';
+      context = old_context_buffer.contents();
+    }
+  }
+  if (!input_stack::get_location(&filename, &lineno)) {
+    if (context) {
+      if (context[0] == '\n' && context[1] == '\0')
+	error("%1 before newline", s);
+      else
+	error("%1 before `%2'", s, context);
+    }
+    else
+      error("%1 at end of picture", s);
+  }
+  else {
+    if (context) {
+      if (context[0] == '\n' && context[1] == '\0')
+	error_with_file_and_line(filename, lineno, "%1 before newline", s);
+      else
+	error_with_file_and_line(filename, lineno, "%1 before `%2'",
+				 s, context);
+    }
+    else
+      error_with_file_and_line(filename, lineno, "%1 at end of picture", s);
+  }
+}
+
diff --git a/contrib/groff/pic/main.cc b/contrib/groff/pic/main.cc
new file mode 100644
index 000000000000..87beb5dc285f
--- /dev/null
+++ b/contrib/groff/pic/main.cc
@@ -0,0 +1,621 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "pic.h"
+
+extern int yyparse();
+
+output *out;
+
+int flyback_flag;
+int zero_length_line_flag = 0;
+// Non-zero means we're using a groff driver.
+int driver_extension_flag = 1;
+int compatible_flag = 0;
+int safer_flag = 0;
+int command_char = '.';		// the character that introduces lines
+				// that should be passed through tranparently
+static int lf_flag = 1;		// non-zero if we should attempt to understand
+				// lines beginning with `.lf'
+
+// Non-zero means a parse error was encountered.
+static int had_parse_error = 0;
+
+void do_file(const char *filename);
+
+class top_input : public input {
+  FILE *fp;
+  int bol;
+  int eof;
+  int push_back[3];
+  int start_lineno;
+public:
+  top_input(FILE *);
+  int get();
+  int peek();
+  int get_location(const char **, int *);
+};
+
+top_input::top_input(FILE *p) : fp(p), bol(1), eof(0)
+{
+  push_back[0] = push_back[1] = push_back[2] = EOF;
+  start_lineno = current_lineno;
+}
+
+int top_input::get()
+{
+  if (eof)
+    return EOF;
+  if (push_back[2] != EOF) {
+    int c = push_back[2];
+    push_back[2] = EOF;
+    return c;
+  }
+  else if (push_back[1] != EOF) {
+    int c = push_back[1];
+    push_back[1] = EOF;
+    return c;
+  }
+  else if (push_back[0] != EOF) {
+    int c = push_back[0];
+    push_back[0] = EOF;
+    return c;
+  }
+  int c = getc(fp);
+  while (illegal_input_char(c)) {
+    error("illegal input character code %1", int(c));
+    c = getc(fp);
+    bol = 0;
+  }
+  if (bol && c == '.') {
+    c = getc(fp);
+    if (c == 'P') {
+      c = getc(fp);
+      if (c == 'F' || c == 'E') {
+	int d = getc(fp);
+	if (d != EOF)
+	  ungetc(d, fp);
+	if (d == EOF || d == ' ' || d == '\n' || compatible_flag) {
+	  eof = 1;
+	  flyback_flag = c == 'F';
+	  return EOF;
+	}
+	push_back[0] = c;
+	push_back[1] = 'P';
+	return '.';
+      }
+      if (c == 'S') {
+	c = getc(fp);
+	if (c != EOF)
+	  ungetc(c, fp);
+	if (c == EOF || c == ' ' || c == '\n' || compatible_flag) {
+	  error("nested .PS");
+	  eof = 1;
+	  return EOF;
+	}
+	push_back[0] = 'S';
+	push_back[1] = 'P';
+	return '.';
+      }
+      if (c != EOF)
+	ungetc(c, fp);
+      push_back[0] = 'P';
+      return '.';
+    }
+    else {
+      if (c != EOF)
+	ungetc(c, fp);
+      return '.';
+    }
+  }
+  if (c == '\n') {
+    bol = 1;
+    current_lineno++;
+    return '\n';
+  }
+  bol = 0;
+  if (c == EOF) {
+    eof = 1;
+    error("end of file before .PE or .PF");
+    error_with_file_and_line(current_filename, start_lineno - 1,
+			     ".PS was here");
+  }
+  return c;
+}
+
+int top_input::peek()
+{
+  if (eof)
+    return EOF;
+  if (push_back[2] != EOF)
+    return push_back[2];
+  if (push_back[1] != EOF)
+    return push_back[1];
+  if (push_back[0] != EOF)
+    return push_back[0];
+  int c = getc(fp);
+  while (illegal_input_char(c)) {
+    error("illegal input character code %1", int(c));
+    c = getc(fp);
+    bol = 0;
+  }
+  if (bol && c == '.') {
+    c = getc(fp);
+    if (c == 'P') {
+      c = getc(fp);
+      if (c == 'F' || c == 'E') {
+	int d = getc(fp);
+	if (d != EOF)
+	  ungetc(d, fp);
+	if (d == EOF || d == ' ' || d == '\n' || compatible_flag) {
+	  eof = 1;
+	  flyback_flag = c == 'F';
+	  return EOF;
+	}
+	push_back[0] = c;
+	push_back[1] = 'P';
+	push_back[2] = '.';
+	return '.';
+      }
+      if (c == 'S') {
+	c = getc(fp);
+	if (c != EOF)
+	  ungetc(c, fp);
+	if (c == EOF || c == ' ' || c == '\n' || compatible_flag) {
+	  error("nested .PS");
+	  eof = 1;
+	  return EOF;
+	}
+	push_back[0] = 'S';
+	push_back[1] = 'P';
+	push_back[2] = '.';
+	return '.';
+      }
+      if (c != EOF)
+	ungetc(c, fp);
+      push_back[0] = 'P';
+      push_back[1] = '.';
+      return '.';
+    }
+    else {
+      if (c != EOF)
+	ungetc(c, fp);
+      push_back[0] = '.';
+      return '.';
+    }
+  }
+  if (c != EOF)
+    ungetc(c, fp);
+  if (c == '\n')
+    return '\n';
+  return c;
+}
+
+int top_input::get_location(const char **filenamep, int *linenop)
+{
+  *filenamep = current_filename;
+  *linenop = current_lineno;
+  return 1;
+}
+
+void do_picture(FILE *fp)
+{
+  flyback_flag = 0;
+  int c;
+  while ((c = getc(fp)) == ' ')
+    ;
+  if (c == '<') {
+    string filename;
+    while ((c = getc(fp)) == ' ')
+      ;
+    while (c != EOF && c != ' ' && c != '\n') {
+      filename += char(c);
+      c = getc(fp);
+    }
+    if (c == ' ') {
+      do {
+	c = getc(fp);
+      } while (c != EOF && c != '\n');
+    }
+    if (c == '\n') 
+      current_lineno++;
+    if (filename.length() == 0)
+      error("missing filename after `<'");
+    else {
+      filename += '\0';
+      const char *old_filename = current_filename;
+      int old_lineno = current_lineno;
+      // filenames must be permanent
+      do_file(strsave(filename.contents()));
+      current_filename = old_filename;
+      current_lineno = old_lineno;
+    }
+    out->set_location(current_filename, current_lineno);
+  }
+  else {
+    out->set_location(current_filename, current_lineno);
+    string start_line;
+    while (c != EOF) {
+      if (c == '\n') {
+	current_lineno++;
+	break;
+      }
+      start_line += c;
+      c = getc(fp);
+    }
+    if (c == EOF)
+      return;
+    start_line += '\0';
+    double wid, ht;
+    switch (sscanf(&start_line[0], "%lf %lf", &wid, &ht)) {
+    case 1:
+      ht = 0.0;
+      break;
+    case 2:
+      break;
+    default:
+      ht = wid = 0.0;
+      break;
+    }
+    out->set_desired_width_height(wid, ht);
+    out->set_args(start_line.contents());
+    lex_init(new top_input(fp));
+    if (yyparse()) {
+      had_parse_error = 1;
+      lex_error("giving up on this picture");
+    }
+    parse_cleanup();
+    lex_cleanup();
+
+    // skip the rest of the .PF/.PE line
+    while ((c = getc(fp)) != EOF && c != '\n')
+      ;
+    if (c == '\n')
+      current_lineno++;
+    out->set_location(current_filename, current_lineno);
+  }
+}
+
+void do_file(const char *filename)
+{
+  FILE *fp;
+  if (strcmp(filename, "-") == 0)
+    fp = stdin;
+  else {
+    errno = 0;
+    fp = fopen(filename, "r");
+    if (fp == 0)
+      fatal("can't open `%1': %2", filename, strerror(errno));
+  }
+  out->set_location(filename, 1);
+  current_filename = filename;
+  current_lineno = 1;
+  enum { START, MIDDLE, HAD_DOT, HAD_P, HAD_PS, HAD_l, HAD_lf } state = START;
+  for (;;) {
+    int c = getc(fp);
+    if (c == EOF)
+      break;
+    switch (state) {
+    case START:
+      if (c == '.')
+	state = HAD_DOT;
+      else {
+	putchar(c);
+	if (c == '\n') {
+	  current_lineno++;
+	  state = START;
+	}
+	else
+	  state = MIDDLE;
+      }
+      break;
+    case MIDDLE:
+      putchar(c);
+      if (c == '\n') {
+	current_lineno++;
+	state = START;
+      }
+      break;
+    case HAD_DOT:
+      if (c == 'P')
+	state = HAD_P;
+      else if (lf_flag && c == 'l')
+	state = HAD_l;
+      else {
+	putchar('.');
+	putchar(c);
+	if (c == '\n') {
+	  current_lineno++;
+	  state = START;
+	}
+	else
+	  state = MIDDLE;
+      }
+      break;
+    case HAD_P:
+      if (c == 'S')
+	state = HAD_PS;
+      else  {
+	putchar('.');
+	putchar('P');
+	putchar(c);
+	if (c == '\n') {
+	  current_lineno++;
+	  state = START;
+	}
+	else
+	  state = MIDDLE;
+      }
+      break;
+    case HAD_PS:
+      if (c == ' ' || c == '\n' || compatible_flag) {
+	ungetc(c, fp);
+	do_picture(fp);
+	state = START;
+      }
+      else {
+	fputs(".PS", stdout);
+	putchar(c);
+	state = MIDDLE;
+      }
+      break;
+    case HAD_l:
+      if (c == 'f')
+	state = HAD_lf;
+      else {
+	putchar('.');
+	putchar('l');
+	putchar(c);
+	if (c == '\n') {
+	  current_lineno++;
+	  state = START;
+	}
+	else
+	  state = MIDDLE;
+      }
+      break;
+    case HAD_lf:
+      if (c == ' ' || c == '\n' || compatible_flag) {
+	string line;
+	while (c != EOF) {
+	  line += c;
+	  if (c == '\n') {
+	    current_lineno++;
+	    break;
+	  }
+	  c = getc(fp);
+	}
+	line += '\0';
+	interpret_lf_args(line.contents());
+	printf(".lf%s", line.contents());
+	state = START;
+      }
+      else {
+	fputs(".lf", stdout);
+	putchar(c);
+	state = MIDDLE;
+      }
+      break;
+    default:
+      assert(0);
+    }
+  }
+  switch (state) {
+  case START:
+    break;
+  case MIDDLE:
+    putchar('\n');
+    break;
+  case HAD_DOT:
+    fputs(".\n", stdout);
+    break;
+  case HAD_P:
+    fputs(".P\n", stdout);
+    break;
+  case HAD_PS:
+    fputs(".PS\n", stdout);
+    break;
+  case HAD_l:
+    fputs(".l\n", stdout);
+    break;
+  case HAD_lf:
+    fputs(".lf\n", stdout);
+    break;
+  }
+  if (fp != stdin)
+    fclose(fp);
+}
+
+#ifdef FIG_SUPPORT
+void do_whole_file(const char *filename)
+{
+  // Do not set current_filename.
+  FILE *fp;
+  if (strcmp(filename, "-") == 0)
+    fp = stdin;
+  else {
+    errno = 0;
+    fp = fopen(filename, "r");
+    if (fp == 0)
+      fatal("can't open `%1': %2", filename, strerror(errno));
+  }
+  lex_init(new file_input(fp, filename));
+  if (yyparse())
+    had_parse_error = 1;
+  parse_cleanup();
+  lex_cleanup();
+}
+#endif
+
+void usage()
+{
+  fprintf(stderr, "usage: %s [ -nvC ] [ filename ... ]\n", program_name);
+#ifdef TEX_SUPPORT
+  fprintf(stderr, "       %s -t [ -cvzC ] [ filename ... ]\n", program_name);
+#endif
+#ifdef FIG_SUPPORT
+  fprintf(stderr, "       %s -f [ -v ] [ filename ]\n", program_name);
+#endif
+  exit(1);
+}
+
+#ifdef __MSDOS__
+static char *fix_program_name(char *arg, char *dflt)
+{
+  if (!arg)
+    return dflt;
+  char *prog = strchr(arg, '\0');
+  for (;;) {
+    if (prog == arg)
+      break;
+    --prog;
+    if (strchr("\\/:", *prog)) {
+      prog++;
+      break;
+    }
+  }	
+  char *ext = strchr(prog, '.');
+  if (ext)
+    *ext = '\0';
+  for (char *p = prog; *p; p++)
+    if ('A' <= *p && *p <= 'Z')
+      *p = 'a' + (*p - 'A');
+  return prog;
+}
+#endif /* __MSDOS__ */
+
+int main(int argc, char **argv)
+{
+#ifdef __MSDOS__
+  argv[0] = fix_program_name(argv[0], "pic");
+#endif /* __MSDOS__ */
+  program_name = argv[0];
+  static char stderr_buf[BUFSIZ];
+  setbuf(stderr, stderr_buf);
+  int opt;
+#ifdef TEX_SUPPORT
+  int tex_flag = 0;
+  int tpic_flag = 0;
+#endif
+#ifdef FIG_SUPPORT
+  int whole_file_flag = 0;
+  int fig_flag = 0;
+#endif
+  while ((opt = getopt(argc, argv, "T:CDStcvnxzpf")) != EOF)
+    switch (opt) {
+    case 'C':
+      compatible_flag = 1;
+      break;
+    case 'D':
+    case 'T':
+      break;
+    case 'S':
+      safer_flag = 1;
+      break;
+    case 'f':
+#ifdef FIG_SUPPORT
+      whole_file_flag++;
+      fig_flag++;
+#else
+      fatal("fig support not included");
+#endif
+      break;
+    case 'n':
+      driver_extension_flag = 0;
+      break;
+    case 'p':
+    case 'x':
+      warning("-%1 option is obsolete", char(opt));
+      break;
+    case 't':
+#ifdef TEX_SUPPORT
+      tex_flag++;
+#else
+      fatal("TeX support not included");
+#endif
+      break;
+    case 'c':
+#ifdef TEX_SUPPORT
+      tpic_flag++;
+#else
+      fatal("TeX support not included");
+#endif
+      break;
+    case 'v':
+      {
+	extern const char *version_string;
+	fprintf(stderr, "GNU pic version %s\n", version_string);
+	fflush(stderr);
+	break;
+      }
+    case 'z':
+      // zero length lines will be printed as dots
+      zero_length_line_flag++;
+      break;
+    case '?':
+      usage();
+      break;
+    default:
+      assert(0);
+    }
+  parse_init();
+#ifdef TEX_SUPPORT
+  if (tpic_flag) {
+    out = make_tpic_output();
+    lf_flag = 0;
+  }
+  else if (tex_flag) {
+    out = make_tex_output();
+    command_char = '\\';
+    lf_flag = 0;
+  }
+  else
+#endif
+#ifdef FIG_SUPPORT
+  if (fig_flag)
+    out = make_fig_output();
+  else
+#endif
+    out = make_troff_output();
+#ifdef FIG_SUPPORT
+  if (whole_file_flag) {
+    if (optind >= argc)
+      do_whole_file("-");
+    else if (argc - optind > 1)
+      usage();
+    else
+      do_whole_file(argv[optind]);
+  }
+  else {
+#endif
+    if (optind >= argc)
+      do_file("-");
+    else
+      for (int i = optind; i < argc; i++)
+	do_file(argv[i]);
+#ifdef FIG_SUPPORT
+  }
+#endif
+  delete out;
+  if (ferror(stdout) || fflush(stdout) < 0)
+    fatal("output error");
+  return had_parse_error;
+}
+
diff --git a/contrib/groff/pic/object.cc b/contrib/groff/pic/object.cc
new file mode 100644
index 000000000000..860e1bc64531
--- /dev/null
+++ b/contrib/groff/pic/object.cc
@@ -0,0 +1,1833 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "pic.h"
+#include "ptable.h"
+#include "object.h"
+
+void print_object_list(object *);
+
+line_type::line_type()
+: type(solid), thickness(1.0)
+{
+}
+
+output::output() : desired_height(0.0), desired_width(0.0), args(0)
+{
+}
+
+output::~output()
+{
+  a_delete args;
+}
+
+void output::set_desired_width_height(double wid, double ht)
+{
+  desired_width = wid;
+  desired_height = ht;
+}
+
+void output::set_args(const char *s)
+{
+  a_delete args;
+  if (s == 0 || *s == '\0')
+    args = 0;
+  else
+    args = strsave(s);
+}
+
+void output::command(const char *, const char *, int)
+{
+}
+
+void output::set_location(const char *, int)
+{
+}
+
+int output::supports_filled_polygons()
+{
+  return 0;
+}
+
+void output::begin_block(const position &, const position &)
+{
+}
+
+void output::end_block()
+{
+}
+
+double output::compute_scale(double sc, const position &ll, const position &ur)
+{
+  distance dim = ur - ll;
+  if (desired_width != 0.0 || desired_height != 0.0) {
+    sc = 0.0;
+    if (desired_width != 0.0) {
+      if (dim.x == 0.0)
+	error("width specified for picture with zero width");
+      else
+	sc = dim.x/desired_width;
+    }
+    if (desired_height != 0.0) {
+      if (dim.y == 0.0)
+	error("height specified for picture with zero height");
+      else {
+	double tem = dim.y/desired_height;
+	if (tem > sc)
+	  sc = tem;
+      }
+    }
+    return sc == 0.0 ? 1.0 : sc;
+  }
+  else {
+    if (sc <= 0.0)
+      sc = 1.0;
+    distance sdim = dim/sc;
+    double max_width = 0.0;
+    lookup_variable("maxpswid", &max_width);
+    double max_height = 0.0;
+    lookup_variable("maxpsht", &max_height);
+    if ((max_width > 0.0 && sdim.x > max_width)
+	|| (max_height > 0.0 && sdim.y > max_height)) {
+      double xscale = dim.x/max_width;
+      double yscale = dim.y/max_height;
+      return xscale > yscale ? xscale : yscale;
+    }
+    else
+      return sc;
+  }
+}
+
+position::position(const place &pl)
+{
+  if (pl.obj != 0) {
+    // Use two statements to work around bug in SGI C++.
+    object *tem = pl.obj;
+    *this = tem->origin();
+  }
+  else {
+    x = pl.x;
+    y = pl.y;
+  }
+}
+
+position::position() : x(0.0), y(0.0)
+{
+}
+
+position::position(double a, double b) : x(a), y(b)
+{
+}
+
+
+int operator==(const position &a, const position &b)
+{
+  return a.x == b.x && a.y == b.y;
+}
+
+int operator!=(const position &a, const position &b)
+{
+  return a.x != b.x || a.y != b.y;
+}
+
+position &position::operator+=(const position &a)
+{
+  x += a.x;
+  y += a.y;
+  return *this;
+}
+
+position &position::operator-=(const position &a)
+{
+  x -= a.x;
+  y -= a.y;
+  return *this;
+}
+
+position &position::operator*=(double a)
+{
+  x *= a;
+  y *= a;
+  return *this;
+}
+
+position &position::operator/=(double a)
+{
+  x /= a;
+  y /= a;
+  return *this;
+}
+
+position operator-(const position &a)
+{
+  return position(-a.x, -a.y);
+}
+
+position operator+(const position &a, const position &b)
+{
+  return position(a.x + b.x, a.y + b.y);
+}
+
+position operator-(const position &a, const position &b)
+{
+  return position(a.x - b.x, a.y - b.y);
+}
+
+position operator/(const position &a, double n)
+{
+  return position(a.x/n, a.y/n);
+}
+
+position operator*(const position &a, double n)
+{
+  return position(a.x*n, a.y*n);
+}
+
+// dot product
+
+double operator*(const position &a, const position &b)
+{
+  return a.x*b.x + a.y*b.y;
+}
+
+double hypot(const position &a)
+{
+  return hypot(a.x, a.y);
+}
+
+struct arrow_head_type {
+  double height;
+  double width;
+  int solid;
+};
+
+void draw_arrow(const position &pos, const distance &dir,
+		const arrow_head_type &aht, const line_type &lt)
+{
+  double hyp = hypot(dir);
+  if (hyp == 0.0) {
+    error("cannot draw arrow on object with zero length");
+    return;
+  }
+  position base = -dir;
+  base *= aht.height/hyp;
+  position n(dir.y, -dir.x);
+  n *= aht.width/(hyp*2.0);
+  line_type slt = lt;
+  slt.type = line_type::solid;
+  if (aht.solid && out->supports_filled_polygons()) {
+    position v[3];
+    v[0] = pos;
+    v[1] = pos + base + n;
+    v[2] = pos + base - n;
+    // A value > 1 means fill with the current color.
+    out->polygon(v, 3, slt, 2.0);
+  }
+  else {
+    position v[2];
+    v[0] = pos;
+    v[1] = pos + base + n;
+    out->line(pos + base - n, v, 2, slt);
+  }
+}
+
+object::object() : prev(0), next(0)
+{
+}
+
+object::~object()
+{
+}
+
+void object::move_by(const position &)
+{
+}
+
+void object::print()
+{
+}
+
+void object::print_text()
+{
+}
+
+int object::blank()
+{
+  return 0;
+}
+
+struct bounding_box {
+  int blank;
+  position ll;
+  position ur;
+
+  bounding_box();
+  void encompass(const position &);
+};
+
+bounding_box::bounding_box()
+: blank(1)
+{
+}
+
+void bounding_box::encompass(const position &pos)
+{
+  if (blank) {
+    ll = pos;
+    ur = pos;
+    blank = 0;
+  }
+  else {
+    if (pos.x < ll.x)
+      ll.x = pos.x;
+    if (pos.y < ll.y)
+      ll.y = pos.y;
+    if (pos.x > ur.x)
+      ur.x = pos.x;
+    if (pos.y > ur.y)
+      ur.y = pos.y;
+  }
+}
+
+void object::update_bounding_box(bounding_box *)
+{
+}
+
+position object::origin()
+{
+  return position(0.0,0.0);
+}
+
+position object::north()
+{
+  return origin();
+}
+
+position object::south()
+{
+  return origin();
+}
+
+position object::east()
+{
+  return origin();
+}
+
+position object::west()
+{
+  return origin();
+}
+
+position object::north_east()
+{
+  return origin();
+}
+
+position object::north_west()
+{
+  return origin();
+}
+
+position object::south_east()
+{
+  return origin();
+}
+
+position object::south_west()
+{
+  return origin();
+}
+
+position object::start()
+{
+  return origin();
+}
+
+position object::end()
+{
+  return origin();
+}
+
+position object::center()
+{
+  return origin();
+}
+
+double object::width()
+{
+  return 0.0;
+}
+
+double object::radius()
+{
+  return 0.0;
+}
+
+double object::height()
+{
+  return 0.0;
+}
+
+place *object::find_label(const char *)
+{
+  return 0;
+}
+
+segment::segment(const position &a, int n, segment *p)
+: pos(a), is_absolute(n), next(p)
+{
+}
+
+text_item::text_item(char *t, const char *fn, int ln)
+: filename(fn), lineno(ln), text(t), next(0)
+{
+  adj.h = CENTER_ADJUST;
+  adj.v = NONE_ADJUST;
+}
+
+text_item::~text_item()
+{
+  a_delete text;
+}
+
+object_spec::object_spec(object_type t) : type(t)
+{
+  flags = 0;
+  tbl = 0;
+  segment_list = 0;
+  segment_width = segment_height = 0.0;
+  segment_is_absolute = 0;
+  text = 0;
+  with = 0;
+  dir = RIGHT_DIRECTION;
+}
+
+object_spec::~object_spec()
+{
+  delete tbl;
+  while (segment_list != 0) {
+    segment *tem = segment_list;
+    segment_list = segment_list->next;
+    delete tem;
+  }
+  object *p = oblist.head;
+  while (p != 0) {
+    object *tem = p;
+    p = p->next;
+    delete tem;
+  }
+  while (text != 0) {
+    text_item *tem = text;
+    text = text->next;
+    delete tem;
+  }
+  delete with;
+}
+
+class command_object : public object {
+  char *s;
+  const char *filename;
+  int lineno;
+public:
+  command_object(char *, const char *, int);
+  ~command_object();
+  object_type type() { return OTHER_OBJECT; }
+  void print();
+};
+
+command_object::command_object(char *p, const char *fn, int ln)
+: s(p), filename(fn), lineno(ln)
+{
+}
+
+command_object::~command_object()
+{
+  a_delete s;
+}
+
+void command_object::print()
+{
+  out->command(s, filename, lineno);
+}
+
+object *make_command_object(char *s, const char *fn, int ln)
+{
+  return new command_object(s, fn, ln);
+}
+
+class mark_object : public object {
+public:
+  mark_object();
+  object_type type();
+};
+
+object *make_mark_object()
+{
+  return new mark_object();
+}
+
+mark_object::mark_object()
+{
+}
+
+object_type mark_object::type()
+{
+  return MARK_OBJECT;
+}
+
+object_list::object_list() : head(0), tail(0)
+{
+}
+
+void object_list::append(object *obj)
+{
+  if (tail == 0) {
+    obj->next = obj->prev = 0;
+    head = tail = obj;
+  }
+  else {
+    obj->prev = tail;
+    obj->next = 0;
+    tail->next = obj;
+    tail = obj;
+  }
+}
+
+void object_list::wrap_up_block(object_list *ol)
+{
+  object *p;
+  for (p = tail; p && p->type() != MARK_OBJECT; p = p->prev)
+    ;
+  assert(p != 0);
+  ol->head = p->next;
+  if (ol->head) {
+    ol->tail = tail;
+    ol->head->prev = 0;
+  }
+  else
+    ol->tail = 0;
+  tail = p->prev;
+  if (tail)
+    tail->next = 0;
+  else
+    head = 0;
+  delete p;
+}
+
+text_piece::text_piece()
+: text(0), filename(0), lineno(-1)
+{
+  adj.h = CENTER_ADJUST;
+  adj.v = NONE_ADJUST;
+}
+
+text_piece::~text_piece()
+{
+  a_delete text;
+}
+
+class graphic_object : public object {
+  int ntext;
+  text_piece *text;
+  int aligned;
+protected:
+  line_type lt;
+public:
+  graphic_object();
+  ~graphic_object();
+  object_type type() = 0;
+  void print_text();
+  void add_text(text_item *, int);
+  void set_dotted(double);
+  void set_dashed(double);
+  void set_thickness(double);
+  void set_invisible();
+  virtual void set_fill(double);
+};
+
+graphic_object::graphic_object() : ntext(0), text(0), aligned(0)
+{
+}
+
+void graphic_object::set_dotted(double wid)
+{
+  lt.type = line_type::dotted;
+  lt.dash_width = wid;
+}
+
+void graphic_object::set_dashed(double wid)
+{
+  lt.type = line_type::dashed;
+  lt.dash_width = wid;
+}
+
+void graphic_object::set_thickness(double th)
+{
+  lt.thickness = th;
+}
+
+void graphic_object::set_fill(double)
+{
+}
+
+void graphic_object::set_invisible()
+{
+  lt.type = line_type::invisible;
+}
+
+void graphic_object::add_text(text_item *t, int a)
+{
+  aligned = a;
+  int len = 0;
+  text_item *p;
+  for (p = t; p; p = p->next)
+    len++;
+  if (len == 0)
+    text = 0;
+  else {
+    text = new text_piece[len];
+    for (p = t, len = 0; p; p = p->next, len++) {
+      text[len].text = p->text;
+      p->text = 0;
+      text[len].adj = p->adj;
+      text[len].filename = p->filename;
+      text[len].lineno = p->lineno;
+    }
+  }
+  ntext = len;
+}
+
+void graphic_object::print_text()
+{
+  double angle = 0.0;
+  if (aligned) {
+    position d(end() - start());
+    if (d.x != 0.0 || d.y != 0.0)
+      angle = atan2(d.y, d.x);
+  }
+  if (text != 0)
+    out->text(center(), text, ntext, angle);
+}
+
+graphic_object::~graphic_object()
+{
+  if (text)
+    ad_delete(ntext) text;
+}
+
+class rectangle_object : public graphic_object {
+protected:
+  position cent;
+  position dim;
+public:
+  rectangle_object(const position &);
+  double width() { return dim.x; }
+  double height() { return dim.y; }
+  position origin() { return cent; }
+  position center() { return cent; }
+  position north() { return position(cent.x, cent.y + dim.y/2.0); }
+  position south() { return position(cent.x, cent.y - dim.y/2.0); }
+  position east() { return position(cent.x + dim.x/2.0, cent.y); }
+  position west() { return position(cent.x - dim.x/2.0, cent.y); }
+  position north_east() { return position(cent.x + dim.x/2.0, cent.y + dim.y/2.0); }
+  position north_west() { return position(cent.x - dim.x/2.0, cent.y + dim.y/2.0); }
+  position south_east() { return position(cent.x + dim.x/2.0, cent.y - dim.y/2.0); }
+  position south_west() { return position(cent.x - dim.x/2.0, cent.y - dim.y/2.0); }
+  object_type type() = 0;
+  void update_bounding_box(bounding_box *);
+  void move_by(const position &);
+};
+
+rectangle_object::rectangle_object(const position &d)
+: dim(d)
+{
+}
+
+void rectangle_object::update_bounding_box(bounding_box *p)
+{
+  p->encompass(cent - dim/2.0);
+  p->encompass(cent + dim/2.0);
+}
+
+void rectangle_object::move_by(const position &a)
+{
+  cent += a;
+}
+
+class closed_object : public rectangle_object {
+public:
+  closed_object(const position &);
+  object_type type() = 0;
+  void set_fill(double);
+protected:
+  double fill;			// < 0 if not filled
+};
+
+closed_object::closed_object(const position &pos)
+: rectangle_object(pos), fill(-1.0)
+{
+}
+
+void closed_object::set_fill(double f)
+{
+  assert(f >= 0.0);
+  fill = f;
+}
+
+
+class box_object : public closed_object {
+  double xrad;
+  double yrad;
+public:
+  box_object(const position &, double);
+  object_type type() { return BOX_OBJECT; }
+  void print();
+  position north_east();
+  position north_west();
+  position south_east();
+  position south_west();
+};
+
+box_object::box_object(const position &pos, double r)
+: closed_object(pos), xrad(dim.x > 0 ? r : -r), yrad(dim.y > 0 ? r : -r)
+{
+}
+
+const double CHOP_FACTOR = 1.0 - 1.0/M_SQRT2;
+
+position box_object::north_east()
+{
+  return position(cent.x + dim.x/2.0 - CHOP_FACTOR*xrad,
+		  cent.y + dim.y/2.0 - CHOP_FACTOR*yrad);
+}
+
+position box_object::north_west()
+{
+  return position(cent.x - dim.x/2.0 + CHOP_FACTOR*xrad,
+		  cent.y + dim.y/2.0 - CHOP_FACTOR*yrad);
+}
+
+position box_object::south_east()
+{
+  return position(cent.x + dim.x/2.0 - CHOP_FACTOR*xrad,
+		  cent.y - dim.y/2.0 + CHOP_FACTOR*yrad);
+}
+
+position box_object::south_west()
+{
+  return position(cent.x - dim.x/2.0 + CHOP_FACTOR*xrad,
+		  cent.y - dim.y/2.0 + CHOP_FACTOR*yrad);
+}
+
+void box_object::print()
+{
+  if (lt.type == line_type::invisible && fill < 0.0)
+    return;
+  if (xrad == 0.0) {
+    distance dim2 = dim/2.0;
+    position vec[4];
+    vec[0] = cent + position(dim2.x, -dim2.y);
+    vec[1] = cent + position(dim2.x, dim2.y);
+    vec[2] = cent + position(-dim2.x, dim2.y);
+    vec[3] = cent + position(-dim2.x, -dim2.y);
+    out->polygon(vec, 4, lt, fill);
+  }
+  else {
+    distance abs_dim(fabs(dim.x), fabs(dim.y));
+    out->rounded_box(cent, abs_dim, fabs(xrad), lt, fill);
+  }
+}
+
+graphic_object *object_spec::make_box(position *curpos, direction *dirp)
+{
+  static double last_box_height;
+  static double last_box_width;
+  static double last_box_radius;
+  static int have_last_box = 0;
+  if (!(flags & HAS_HEIGHT)) {
+    if ((flags & IS_SAME) && have_last_box)
+      height = last_box_height;
+    else
+      lookup_variable("boxht", &height);
+  }
+  if (!(flags & HAS_WIDTH)) {
+    if ((flags & IS_SAME) && have_last_box)
+      width = last_box_width;
+    else
+      lookup_variable("boxwid", &width);
+  }
+  if (!(flags & HAS_RADIUS)) {
+    if ((flags & IS_SAME) && have_last_box)
+      radius = last_box_radius;
+    else
+      lookup_variable("boxrad", &radius);
+  }
+  last_box_width = width;
+  last_box_height = height;
+  last_box_radius = radius;
+  have_last_box = 1;
+  radius = fabs(radius);
+  if (radius*2.0 > fabs(width))
+    radius = fabs(width/2.0);
+  if (radius*2.0 > fabs(height))
+    radius = fabs(height/2.0);
+  box_object *p = new box_object(position(width, height), radius);
+  if (!position_rectangle(p, curpos, dirp)) {
+    delete p;
+    p = 0;
+  }
+  return p;
+}
+
+// return non-zero for success
+
+int object_spec::position_rectangle(rectangle_object *p,
+				    position *curpos, direction *dirp)
+{
+  position pos;
+  dir = *dirp;			// ignore any direction in attribute list
+  position motion;
+  switch (dir) {
+  case UP_DIRECTION:
+    motion.y = p->height()/2.0;
+    break;
+  case DOWN_DIRECTION:
+    motion.y = -p->height()/2.0;
+    break;
+  case LEFT_DIRECTION:
+    motion.x = -p->width()/2.0;
+    break;
+  case RIGHT_DIRECTION:
+    motion.x = p->width()/2.0;
+    break;
+  default:
+    assert(0);
+  }
+  if (flags & HAS_AT) {
+    pos = at;
+    if (flags & HAS_WITH) {
+      place offset;
+      place here;
+      here.obj = p;
+      if (!with->follow(here, &offset))
+	return 0;
+      pos -= offset;
+    }
+  }
+  else {
+    pos = *curpos;
+    pos += motion;
+  }
+  p->move_by(pos);
+  pos += motion;
+  *curpos = pos;
+  return 1;
+}
+
+class block_object : public rectangle_object {
+  object_list oblist;
+  PTABLE(place) *tbl;
+public:
+  block_object(const position &, const object_list &ol, PTABLE(place) *t);
+  ~block_object();
+  place *find_label(const char *);
+  object_type type();
+  void move_by(const position &);
+  void print();
+};
+
+block_object::block_object(const position &d, const object_list &ol,
+			   PTABLE(place) *t)
+: oblist(ol), tbl(t), rectangle_object(d)
+{
+}
+
+block_object::~block_object()
+{
+  delete tbl;
+  object *p = oblist.head;
+  while (p != 0) {
+    object *tem = p;
+    p = p->next;
+    delete tem;
+  }
+}
+
+void block_object::print()
+{
+  out->begin_block(south_west(), north_east());
+  print_object_list(oblist.head);
+  out->end_block();
+}
+
+static void adjust_objectless_places(PTABLE(place) *tbl, const position &a)
+{
+  // Adjust all the labels that aren't attached to objects.
+  PTABLE_ITERATOR(place) iter(tbl);
+  const char *key;
+  place *pl;
+  while (iter.next(&key, &pl))
+    if (key && csupper(key[0]) && pl->obj == 0) {
+      pl->x += a.x;
+      pl->y += a.y;
+    }
+}
+
+void block_object::move_by(const position &a)
+{
+  cent += a;
+  for (object *p = oblist.head; p; p = p->next)
+    p->move_by(a);
+  adjust_objectless_places(tbl, a);
+}
+
+
+place *block_object::find_label(const char *name)
+{
+  return tbl->lookup(name);
+}
+
+object_type block_object::type()
+{
+  return BLOCK_OBJECT;
+}
+
+graphic_object *object_spec::make_block(position *curpos, direction *dirp)
+{
+  bounding_box bb;
+  for (object *p = oblist.head; p; p = p->next)
+    p->update_bounding_box(&bb);
+  position dim;
+  if (!bb.blank) {
+    position m = -(bb.ll + bb.ur)/2.0;
+    for (object *p = oblist.head; p; p = p->next)
+      p->move_by(m);
+    adjust_objectless_places(tbl, m);
+    dim = bb.ur - bb.ll;
+  }
+  if (flags & HAS_WIDTH)
+    dim.x = width;
+  if (flags & HAS_HEIGHT)
+    dim.y = height;
+  block_object *block = new block_object(dim, oblist, tbl);
+  if (!position_rectangle(block, curpos, dirp)) {
+    delete block;
+    block = 0;
+  }
+  tbl = 0;
+  oblist.head = oblist.tail = 0;
+  return block;
+}
+
+class text_object : public rectangle_object {
+public:
+  text_object(const position &);
+  object_type type() { return TEXT_OBJECT; }
+};
+
+text_object::text_object(const position &d)
+: rectangle_object(d)
+{
+}
+
+graphic_object *object_spec::make_text(position *curpos, direction *dirp)
+{
+  if (!(flags & HAS_HEIGHT)) {
+    lookup_variable("textht", &height);
+    int nitems = 0;
+    for (text_item *t = text; t; t = t->next)
+      nitems++;
+    height *= nitems;
+  }
+  if (!(flags & HAS_WIDTH))
+    lookup_variable("textwid", &width);
+  text_object *p = new text_object(position(width, height));
+  if (!position_rectangle(p, curpos, dirp)) {
+    delete p;
+    p = 0;
+  }
+  return p;
+}
+
+
+class ellipse_object : public closed_object {
+public:
+  ellipse_object(const position &);
+  position north_east() { return position(cent.x + dim.x/(M_SQRT2*2.0),
+					  cent.y + dim.y/(M_SQRT2*2.0)); }
+  position north_west() { return position(cent.x - dim.x/(M_SQRT2*2.0),
+					  cent.y + dim.y/(M_SQRT2*2.0)); }
+  position south_east() { return position(cent.x + dim.x/(M_SQRT2*2.0),
+					  cent.y - dim.y/(M_SQRT2*2.0)); }
+  position south_west() { return position(cent.x - dim.x/(M_SQRT2*2.0),
+					  cent.y - dim.y/(M_SQRT2*2.0)); }
+  double radius() { return dim.x/2.0; }
+  object_type type() { return ELLIPSE_OBJECT; }
+  void print();
+};
+
+ellipse_object::ellipse_object(const position &d)
+: closed_object(d)
+{
+}
+
+void ellipse_object::print()
+{
+  if (lt.type == line_type::invisible && fill < 0.0)
+    return;
+  out->ellipse(cent, dim, lt, fill);
+}
+
+graphic_object *object_spec::make_ellipse(position *curpos, direction *dirp)
+{
+  static double last_ellipse_height;
+  static double last_ellipse_width;
+  static int have_last_ellipse = 0;
+  if (!(flags & HAS_HEIGHT)) {
+    if ((flags & IS_SAME) && have_last_ellipse)
+      height = last_ellipse_height;
+    else
+      lookup_variable("ellipseht", &height);
+  }
+  if (!(flags & HAS_WIDTH)) {
+    if ((flags & IS_SAME) && have_last_ellipse)
+      width = last_ellipse_width;
+    else
+      lookup_variable("ellipsewid", &width);
+  }
+  last_ellipse_width = width;
+  last_ellipse_height = height;
+  have_last_ellipse = 1;
+  ellipse_object *p = new ellipse_object(position(width, height));
+  if (!position_rectangle(p, curpos, dirp)) {
+    delete p;
+    return 0;
+  }
+  return p;
+}
+
+class circle_object : public ellipse_object {
+public:
+  circle_object(double);
+  object_type type() { return CIRCLE_OBJECT; }
+  void print();
+};
+
+circle_object::circle_object(double diam)
+: ellipse_object(position(diam, diam))
+{
+}
+
+void circle_object::print()
+{
+  if (lt.type == line_type::invisible && fill < 0.0)
+    return;
+  out->circle(cent, dim.x/2.0, lt, fill);
+}
+
+graphic_object *object_spec::make_circle(position *curpos, direction *dirp)
+{
+  static double last_circle_radius;
+  static int have_last_circle = 0;
+  if (!(flags & HAS_RADIUS)) {
+    if ((flags & IS_SAME) && have_last_circle)
+      radius = last_circle_radius;
+    else
+      lookup_variable("circlerad", &radius);
+  }
+  last_circle_radius = radius;
+  have_last_circle = 1;
+  circle_object *p = new circle_object(radius*2.0);
+  if (!position_rectangle(p, curpos, dirp)) {
+    delete p;
+    return 0;
+  }
+  return p;
+}
+
+class move_object : public graphic_object {
+  position strt;
+  position en;
+public:
+  move_object(const position &s, const position &e);
+  position origin() { return en; }
+  object_type type() { return MOVE_OBJECT; }
+  void update_bounding_box(bounding_box *);
+  void move_by(const position &);
+};
+
+move_object::move_object(const position &s, const position &e)
+: strt(s), en(e)
+{
+}
+
+void move_object::update_bounding_box(bounding_box *p)
+{
+  p->encompass(strt);
+  p->encompass(en);
+}
+
+void move_object::move_by(const position &a)
+{
+  strt += a;
+  en += a;
+}
+
+graphic_object *object_spec::make_move(position *curpos, direction *dirp)
+{
+  static position last_move;
+  static int have_last_move = 0;
+  *dirp = dir;
+  // No need to look at at since `at' attribute sets `from' attribute.
+  position startpos = (flags & HAS_FROM) ? from : *curpos;
+  if (!(flags & HAS_SEGMENT)) {
+    if ((flags && IS_SAME) && have_last_move)
+      segment_pos = last_move;
+    else {
+      switch (dir) {
+      case UP_DIRECTION:
+	segment_pos.y = segment_height;
+	break;
+      case DOWN_DIRECTION:
+	segment_pos.y = -segment_height;
+	break;
+      case LEFT_DIRECTION:
+	segment_pos.x = -segment_width;
+	break;
+      case RIGHT_DIRECTION:
+	segment_pos.x = segment_width;
+	break;
+      default:
+	assert(0);
+      }
+    }
+  }
+  segment_list = new segment(segment_pos, segment_is_absolute, segment_list);
+  // Reverse the segment_list so that it's in forward order.
+  segment *old = segment_list;
+  segment_list = 0;
+  while (old != 0) {
+    segment *tem = old->next;
+    old->next = segment_list;
+    segment_list = old;
+    old = tem;
+  }
+  // Compute the end position.
+  position endpos = startpos;
+  for (segment *s = segment_list; s; s = s->next)
+    if (s->is_absolute)
+      endpos = s->pos;
+    else 
+      endpos += s->pos;
+  have_last_move = 1;
+  last_move = endpos - startpos;
+  move_object *p = new move_object(startpos, endpos);
+  *curpos = endpos;
+  return p;
+}
+
+class linear_object : public graphic_object {
+protected:
+  char arrow_at_start;
+  char arrow_at_end;
+  arrow_head_type aht;
+  position strt;
+  position en;
+public:
+  linear_object(const position &s, const position &e);
+  position start() { return strt; }
+  position end() { return en; }
+  void move_by(const position &);
+  void update_bounding_box(bounding_box *) = 0;
+  object_type type() = 0;
+  void add_arrows(int at_start, int at_end, const arrow_head_type &);
+};
+
+class line_object : public linear_object {
+protected:
+  position *v;
+  int n;
+public:
+  line_object(const position &s, const position &e, position *, int);
+  ~line_object();
+  position origin() { return strt; }
+  position center() { return (strt + en)/2.0; }
+  position north() { return (en.y - strt.y) > 0 ? en : strt; }
+  position south() { return (en.y - strt.y) < 0 ? en : strt; }
+  position east() { return (en.x - strt.x) > 0 ? en : strt; }
+  position west() { return (en.x - strt.x) < 0 ? en : strt; }
+  object_type type() { return LINE_OBJECT; }
+  void update_bounding_box(bounding_box *);
+  void print();
+  void move_by(const position &);
+};
+
+class arrow_object : public line_object {
+public:
+  arrow_object(const position &, const position &, position *, int);
+  object_type type() { return ARROW_OBJECT; }
+};
+
+class spline_object : public line_object {
+public:
+  spline_object(const position &, const position &, position *, int);
+  object_type type() { return SPLINE_OBJECT; }
+  void print();
+  void update_bounding_box(bounding_box *);
+};
+
+linear_object::linear_object(const position &s, const position &e)
+: strt(s), en(e), arrow_at_start(0), arrow_at_end(0)
+{
+}
+
+void linear_object::move_by(const position &a)
+{
+  strt += a;
+  en += a;
+}
+
+void linear_object::add_arrows(int at_start, int at_end,
+			       const arrow_head_type &a)
+{
+  arrow_at_start = at_start;
+  arrow_at_end = at_end;
+  aht = a;
+}
+
+line_object::line_object(const position &s, const position &e,
+			 position *p, int i)
+: v(p), n(i), linear_object(s, e)
+{
+}
+
+void line_object::print()
+{
+  if (lt.type == line_type::invisible)
+    return;
+  out->line(strt, v, n, lt);
+  if (arrow_at_start)
+    draw_arrow(strt, strt-v[0], aht, lt);
+  if (arrow_at_end)
+    draw_arrow(en, v[n-1] - (n > 1 ? v[n - 2] : strt), aht, lt);
+}
+
+void line_object::update_bounding_box(bounding_box *p)
+{
+  p->encompass(strt);
+  for (int i = 0; i < n; i++)
+    p->encompass(v[i]);
+}
+
+void line_object::move_by(const position &pos)
+{
+  linear_object::move_by(pos);
+  for (int i = 0; i < n; i++)
+    v[i] += pos;
+}
+  
+void spline_object::update_bounding_box(bounding_box *p)
+{
+  p->encompass(strt);
+  p->encompass(en);
+  /*
+
+  If
+
+  p1 = q1/2 + q2/2
+  p2 = q1/6 + q2*5/6
+  p3 = q2*5/6 + q3/6
+  p4 = q2/2 + q3/2
+  [ the points for the Bezier cubic ]
+
+  and
+
+  t = .5
+
+  then
+
+  (1-t)^3*p1 + 3*t*(t - 1)^2*p2 + 3*t^2*(1-t)*p3 + t^3*p4
+  [ the equation for the Bezier cubic ]
+
+  = .125*q1 + .75*q2 + .125*q3
+
+  */
+  for (int i = 1; i < n; i++)
+    p->encompass((i == 1 ? strt : v[i-2])*.125 + v[i-1]*.75 + v[i]*.125);
+}
+
+arrow_object::arrow_object(const position &s, const position &e,
+			   position *p, int i)
+: line_object(s, e, p, i)
+{
+}
+
+spline_object::spline_object(const position &s, const position &e,
+			     position *p, int i)
+: line_object(s, e, p, i)
+{
+}
+
+void spline_object::print()
+{
+  if (lt.type == line_type::invisible)
+    return;
+  out->spline(strt, v, n, lt);
+  if (arrow_at_start)
+    draw_arrow(strt, strt-v[0], aht, lt);
+  if (arrow_at_end)
+    draw_arrow(en, v[n-1] - (n > 1 ? v[n - 2] : strt), aht, lt);
+}
+
+line_object::~line_object()
+{
+  a_delete v;
+}
+
+linear_object *object_spec::make_line(position *curpos, direction *dirp)
+{
+  static position last_line;
+  static int have_last_line = 0;
+  *dirp = dir;
+  // No need to look at at since `at' attribute sets `from' attribute.
+  position startpos = (flags & HAS_FROM) ? from : *curpos;
+  if (!(flags & HAS_SEGMENT)) {
+    if ((flags & IS_SAME) && (type == LINE_OBJECT || type == ARROW_OBJECT)
+	&& have_last_line)
+      segment_pos = last_line;
+    else 
+      switch (dir) {
+      case UP_DIRECTION:
+	segment_pos.y = segment_height;
+	break;
+      case DOWN_DIRECTION:
+	segment_pos.y = -segment_height;
+	break;
+      case LEFT_DIRECTION:
+	segment_pos.x = -segment_width;
+	break;
+      case RIGHT_DIRECTION:
+	segment_pos.x = segment_width;
+	break;
+      default:
+	assert(0);
+      }
+  }
+  segment_list = new segment(segment_pos, segment_is_absolute, segment_list);
+  // reverse the segment_list so that it's in forward order
+  segment *old = segment_list;
+  segment_list = 0;
+  while (old != 0) {
+    segment *tem = old->next;
+    old->next = segment_list;
+    segment_list = old;
+    old = tem;
+  }
+  // Absolutise all movements
+  position endpos = startpos;
+  int nsegments = 0;
+  segment *s;
+  for (s = segment_list; s; s = s->next, nsegments++)
+    if (s->is_absolute)
+      endpos = s->pos;
+    else {
+      endpos += s->pos;
+      s->pos = endpos;
+      s->is_absolute = 1;	// to avoid confusion
+    }
+  // handle chop
+  line_object *p = 0;
+  position *v = new position[nsegments];
+  int i = 0;
+  for (s = segment_list; s; s = s->next, i++)
+    v[i] = s->pos;
+  if (flags & IS_DEFAULT_CHOPPED) {
+    lookup_variable("circlerad", &start_chop);
+    end_chop = start_chop;
+    flags |= IS_CHOPPED;
+  }
+  if (flags & IS_CHOPPED) {
+    position start_chop_vec, end_chop_vec;
+    if (start_chop != 0.0) {
+      start_chop_vec = v[0] - startpos;
+      start_chop_vec *= start_chop / hypot(start_chop_vec);
+    }
+    if (end_chop != 0.0) {
+      end_chop_vec = (v[nsegments - 1]
+		      - (nsegments > 1 ? v[nsegments - 2] : startpos));
+      end_chop_vec *= end_chop / hypot(end_chop_vec);
+    }
+    startpos += start_chop_vec;
+    v[nsegments - 1] -= end_chop_vec;
+    endpos -= end_chop_vec;
+  }
+  switch (type) {
+  case SPLINE_OBJECT:
+    p = new spline_object(startpos, endpos, v, nsegments);
+    break;
+  case ARROW_OBJECT:
+    p = new arrow_object(startpos, endpos, v, nsegments);
+    break;
+  case LINE_OBJECT:
+    p = new line_object(startpos, endpos, v, nsegments);
+    break;
+  default:
+    assert(0);
+  }
+  have_last_line = 1;
+  last_line = endpos - startpos;
+  *curpos = endpos;
+  return p;
+}
+
+class arc_object : public linear_object {
+  int clockwise;
+  position cent;
+  double rad;
+public:
+  arc_object(int, const position &, const position &, const position &);
+  position origin() { return cent; }
+  position center() { return cent; }
+  double radius() { return rad; }
+  position north();
+  position south();
+  position east();
+  position west();
+  position north_east();
+  position north_west();
+  position south_east();
+  position south_west();
+  void update_bounding_box(bounding_box *);
+  object_type type() { return ARC_OBJECT; }
+  void print();
+  void move_by(const position &pos);
+};
+
+arc_object::arc_object(int cw, const position &s, const position &e,
+		       const position &c)
+: linear_object(s, e), clockwise(cw), cent(c)
+{
+  rad = hypot(c - s);
+}
+
+void arc_object::move_by(const position &pos)
+{
+  linear_object::move_by(pos);
+  cent += pos;
+}
+
+// we get arc corners from the corresponding circle
+
+position arc_object::north()
+{
+  position result(cent);
+  result.y += rad;
+  return result;
+}
+
+position arc_object::south()
+{
+  position result(cent);
+  result.y -= rad;
+  return result;
+}
+
+position arc_object::east()
+{
+  position result(cent);
+  result.x += rad;
+  return result;
+}
+
+position arc_object::west()
+{
+  position result(cent);
+  result.x -= rad;
+  return result;
+}
+
+position arc_object::north_east()
+{
+  position result(cent);
+  result.x += rad/M_SQRT2;
+  result.y += rad/M_SQRT2;
+  return result;
+}
+
+position arc_object::north_west()
+{
+  position result(cent);
+  result.x -= rad/M_SQRT2;
+  result.y += rad/M_SQRT2;
+  return result;
+}
+
+position arc_object::south_east()
+{
+  position result(cent);
+  result.x += rad/M_SQRT2;
+  result.y -= rad/M_SQRT2;
+  return result;
+}
+
+position arc_object::south_west()
+{
+  position result(cent);
+  result.x -= rad/M_SQRT2;
+  result.y -= rad/M_SQRT2;
+  return result;
+}
+
+
+void arc_object::print()
+{
+  if (lt.type == line_type::invisible)
+    return;
+  if (clockwise)
+    out->arc(en, cent, strt, lt);
+  else
+    out->arc(strt, cent, en, lt);
+  if (arrow_at_start) {
+    position c = cent - strt;
+    draw_arrow(strt,
+	       (clockwise ? position(c.y, -c.x) : position(-c.y, c.x)),
+	       aht, lt);
+  }
+  if (arrow_at_end) {
+    position e = en - cent;
+    draw_arrow(en,
+	       (clockwise ? position(e.y, -e.x) : position(-e.y, e.x)),
+	       aht, lt);
+  }
+}
+
+inline double max(double a, double b)
+{
+  return a > b ? a : b;
+}
+
+void arc_object::update_bounding_box(bounding_box *p)
+{
+  p->encompass(strt);
+  p->encompass(en);
+  position start_offset = strt - cent;
+  if (start_offset.x == 0.0 && start_offset.y == 0.0)
+    return;
+  position end_offset = en  - cent;
+  if (end_offset.x == 0.0 && end_offset.y == 0.0)
+    return;
+  double start_quad = atan2(start_offset.y, start_offset.x)/(M_PI/2.0);
+  double end_quad = atan2(end_offset.y, end_offset.x)/(M_PI/2.0);
+  if (clockwise) {
+    double temp = start_quad;
+    start_quad = end_quad;
+    end_quad = temp;
+  }
+  if (start_quad < 0.0)
+    start_quad += 4.0;
+  while (end_quad <= start_quad)
+    end_quad += 4.0;
+  double radius = max(hypot(start_offset), hypot(end_offset));
+  for (int q = int(start_quad) + 1; q < end_quad; q++) {
+    position offset;
+    switch (q % 4) {
+    case 0:
+      offset.x = radius;
+      break;
+    case 1:
+      offset.y = radius;
+      break;
+    case 2:
+      offset.x = -radius;
+      break;
+    case 3:
+      offset.y = -radius;
+      break;
+    }
+    p->encompass(cent + offset);
+  }
+}
+
+// We ignore the with attribute. The at attribute always refers to the center.
+
+linear_object *object_spec::make_arc(position *curpos, direction *dirp)
+{
+  *dirp = dir;
+  int cw = (flags & IS_CLOCKWISE) != 0;
+  // compute the start
+  position startpos;
+  if (flags & HAS_FROM)
+    startpos = from;
+  else
+    startpos = *curpos;
+  if (!(flags & HAS_RADIUS))
+    lookup_variable("arcrad", &radius);
+  // compute the end
+  position endpos;
+  if (flags & HAS_TO)
+    endpos = to;
+  else {
+    position m(radius, radius);
+    // Adjust the signs.
+    if (cw) {
+      if (dir == DOWN_DIRECTION || dir == LEFT_DIRECTION)
+	m.x = -m.x;
+      if (dir == DOWN_DIRECTION || dir == RIGHT_DIRECTION)
+	m.y = -m.y;
+      *dirp = direction((dir + 3) % 4);
+    }
+    else {
+      if (dir == UP_DIRECTION || dir == LEFT_DIRECTION)
+	m.x = -m.x;
+      if (dir == DOWN_DIRECTION || dir == LEFT_DIRECTION)
+	m.y = -m.y;
+      *dirp = direction((dir + 1) % 4);
+    }
+    endpos = startpos + m;
+  }
+  // compute the center
+  position centerpos;
+  if (flags & HAS_AT)
+    centerpos = at;
+  else if (startpos == endpos)
+    centerpos = startpos;
+  else {
+    position h = (endpos - startpos)/2.0;
+    double d = hypot(h);
+    if (radius <= 0)
+      radius = .25;
+    // make the radius big enough
+    while (radius < d)
+      radius *= 2.0;
+    double alpha = acos(d/radius);
+    double theta = atan2(h.y, h.x);
+    if (cw)
+      theta -= alpha;
+    else
+      theta += alpha;
+    centerpos = position(cos(theta), sin(theta))*radius + startpos;
+  }
+  arc_object *p = new arc_object(cw, startpos, endpos, centerpos);
+  *curpos = endpos;
+  return p;
+}
+
+graphic_object *object_spec::make_linear(position *curpos, direction *dirp)
+{
+  linear_object *obj;
+  if (type == ARC_OBJECT)
+    obj = make_arc(curpos, dirp);
+  else
+    obj = make_line(curpos, dirp);
+  if (type == ARROW_OBJECT
+      && (flags & (HAS_LEFT_ARROW_HEAD|HAS_RIGHT_ARROW_HEAD)) == 0)
+    flags |= HAS_RIGHT_ARROW_HEAD;
+  if (obj && (flags & (HAS_LEFT_ARROW_HEAD|HAS_RIGHT_ARROW_HEAD))) {
+    arrow_head_type a;
+    int at_start = (flags & HAS_LEFT_ARROW_HEAD) != 0;
+    int at_end = (flags & HAS_RIGHT_ARROW_HEAD) != 0;
+    if (flags & HAS_HEIGHT)
+      a.height = height;
+    else
+      lookup_variable("arrowht", &a.height);
+    if (flags & HAS_WIDTH)
+      a.width = width;
+    else
+      lookup_variable("arrowwid", &a.width);
+    double solid;
+    lookup_variable("arrowhead", &solid);
+    a.solid = solid != 0.0;
+    obj->add_arrows(at_start, at_end, a);
+  }
+  return obj;
+}
+
+object *object_spec::make_object(position *curpos, direction *dirp)
+{
+  graphic_object *obj = 0;
+  switch (type) {
+  case BLOCK_OBJECT:
+    obj = make_block(curpos, dirp);
+    break;
+  case BOX_OBJECT:
+    obj = make_box(curpos, dirp);
+    break;
+  case TEXT_OBJECT:
+    obj = make_text(curpos, dirp);
+    break;
+  case ELLIPSE_OBJECT:
+    obj = make_ellipse(curpos, dirp);
+    break;
+  case CIRCLE_OBJECT:
+    obj = make_circle(curpos, dirp);
+    break;
+  case MOVE_OBJECT:
+    obj = make_move(curpos, dirp);
+    break;
+  case ARC_OBJECT:
+  case LINE_OBJECT:
+  case SPLINE_OBJECT:
+  case ARROW_OBJECT:
+    obj = make_linear(curpos, dirp);
+    break;
+  case MARK_OBJECT:
+  case OTHER_OBJECT:
+  default:
+    assert(0);
+    break;
+  }
+  if (obj) {
+    if (flags & IS_INVISIBLE)
+      obj->set_invisible();
+    if (text != 0)
+      obj->add_text(text, (flags & IS_ALIGNED) != 0);
+    if (flags & IS_DOTTED)
+      obj->set_dotted(dash_width);
+    else if (flags & IS_DASHED)
+      obj->set_dashed(dash_width);
+    double th;
+    if (flags & HAS_THICKNESS)
+      th = thickness;
+    else
+      lookup_variable("linethick", &th);
+    obj->set_thickness(th);
+    if (flags & (IS_DEFAULT_FILLED|IS_FILLED)) {
+      if (flags & IS_DEFAULT_FILLED)
+	lookup_variable("fillval", &fill);
+      if (fill < 0.0)
+	error("bad fill value %1", fill);
+      else
+	obj->set_fill(fill);
+    }
+  }
+  return obj;
+}
+
+struct string_list {
+  string_list *next;
+  char *str;
+  string_list(char *);
+  ~string_list();
+};
+
+string_list::string_list(char *s)
+: next(0), str(s)
+{
+}
+
+string_list::~string_list()
+{
+  a_delete str;
+}
+  
+/* A path is used to hold the argument to the with attribute. For example,
+`.nw' or `.A.s' or `.A'. The major operation on a path is to take a 
+place and follow the path through the place to place within the place.
+Note that `.A.B.C.sw' will work. */
+
+path::path(corner c)
+: label_list(0), crn(c), ypath(0)
+{
+}
+
+path::path(char *l, corner c)
+: crn(c), ypath(0)
+{
+  label_list = new string_list(l);
+}
+
+path::~path()
+{
+  while (label_list) {
+    string_list *tem = label_list;
+    label_list = label_list->next;
+    delete tem;
+  }
+  delete ypath;
+}
+
+void path::append(corner c)
+{
+  assert(crn == 0);
+  crn = c;
+}
+
+void path::append(char *s)
+{
+  string_list **p;
+  for (p = &label_list; *p; p = &(*p)->next)
+    ;
+  *p = new string_list(s);
+}
+
+void path::set_ypath(path *p)
+{
+  ypath = p;
+}
+
+// return non-zero for success
+
+int path::follow(const place &pl, place *result) const
+{
+  const place *p = &pl;
+  for (string_list *lb = label_list; lb; lb = lb->next)
+    if (p->obj == 0 || (p = p->obj->find_label(lb->str)) == 0) {
+      lex_error("object does not contain a place `%1'", lb->str);
+      return 0;
+    }
+  if (crn == 0 || p->obj == 0)
+    *result = *p;
+  else {
+    position pos = ((p->obj)->*(crn))();
+    result->x = pos.x;
+    result->y = pos.y;
+    result->obj = 0;
+  }
+  if (ypath) {
+    place tem;
+    if (!ypath->follow(pl, &tem))
+      return 0;
+    result->y = tem.y;
+    if (result->obj != tem.obj)
+      result->obj = 0;
+  }
+  return 1;
+}
+
+void print_object_list(object *p)
+{
+  for (; p; p = p->next) {
+    p->print();
+    p->print_text();
+  }
+}
+
+void print_picture(object *obj)
+{
+  bounding_box bb;
+  for (object *p = obj; p; p = p->next)
+    p->update_bounding_box(&bb);
+  double scale;
+  lookup_variable("scale", &scale);
+  out->start_picture(scale, bb.ll, bb.ur);
+  print_object_list(obj);
+  out->finish_picture();
+}
+
diff --git a/contrib/groff/pic/object.h b/contrib/groff/pic/object.h
new file mode 100644
index 000000000000..2748e81e8465
--- /dev/null
+++ b/contrib/groff/pic/object.h
@@ -0,0 +1,217 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+struct place;
+
+enum object_type {
+  OTHER_OBJECT,
+  BOX_OBJECT,
+  CIRCLE_OBJECT,
+  ELLIPSE_OBJECT,
+  ARC_OBJECT,
+  SPLINE_OBJECT,
+  LINE_OBJECT,
+  ARROW_OBJECT,
+  MOVE_OBJECT,
+  TEXT_OBJECT,
+  BLOCK_OBJECT,
+  MARK_OBJECT
+  };
+
+struct bounding_box;
+
+struct object {
+  object *prev;
+  object *next;
+  object();
+  virtual ~object();
+  virtual position origin();
+  virtual double width();
+  virtual double radius();
+  virtual double height();
+  virtual position north();
+  virtual position south();
+  virtual position east();
+  virtual position west();
+  virtual position north_east();
+  virtual position north_west();
+  virtual position south_east();
+  virtual position south_west();
+  virtual position start();
+  virtual position end();
+  virtual position center();
+  virtual place *find_label(const char *);
+  virtual void move_by(const position &);
+  virtual int blank();
+  virtual void update_bounding_box(bounding_box *);
+  virtual object_type type() = 0;
+  virtual void print();
+  virtual void print_text();
+};
+
+typedef position (object::*corner)();
+
+struct place {
+  object *obj;
+  double x, y;
+};
+
+struct string_list;
+
+class path {
+  corner crn;
+  string_list *label_list;
+  path *ypath;
+public:
+  path(corner = 0);
+  path(char *, corner = 0);
+  ~path();
+  void append(corner);
+  void append(char *);
+  void set_ypath(path *);
+  int follow(const place &, place *) const;
+};
+
+struct object_list {
+  object *head;
+  object *tail;
+  object_list();
+  void append(object *);
+  void wrap_up_block(object_list *);
+};
+
+declare_ptable(place)
+
+// these go counterclockwise
+enum direction {
+  RIGHT_DIRECTION,
+  UP_DIRECTION,
+  LEFT_DIRECTION,
+  DOWN_DIRECTION
+  };
+
+struct graphics_state {
+  double x, y;
+  direction dir;
+};
+
+struct saved_state : public graphics_state {
+  saved_state *prev;
+  PTABLE(place) *tbl;
+};
+
+
+struct text_item {
+  text_item *next;
+  char *text;
+  adjustment adj;
+  const char *filename;
+  int lineno;
+
+  text_item(char *, const char *, int);
+  ~text_item();
+};
+
+const unsigned long IS_DOTTED = 01;
+const unsigned long IS_DASHED = 02;
+const unsigned long IS_CLOCKWISE = 04;
+const unsigned long IS_INVISIBLE = 020;
+const unsigned long HAS_LEFT_ARROW_HEAD = 040;
+const unsigned long HAS_RIGHT_ARROW_HEAD = 0100;
+const unsigned long HAS_SEGMENT = 0200;
+const unsigned long IS_SAME = 0400;
+const unsigned long HAS_FROM = 01000;
+const unsigned long HAS_AT = 02000;
+const unsigned long HAS_WITH = 04000;
+const unsigned long HAS_HEIGHT = 010000;
+const unsigned long HAS_WIDTH = 020000;
+const unsigned long HAS_RADIUS = 040000;
+const unsigned long HAS_TO = 0100000;
+const unsigned long IS_CHOPPED = 0200000;
+const unsigned long IS_DEFAULT_CHOPPED = 0400000;
+const unsigned long HAS_THICKNESS = 01000000;
+const unsigned long IS_FILLED = 02000000;
+const unsigned long IS_DEFAULT_FILLED = 04000000;
+const unsigned long IS_ALIGNED = 010000000;
+
+struct segment {
+  int is_absolute;
+  position pos;
+  segment *next;
+  segment(const position &, int, segment *);
+};
+
+struct rectangle_object;
+struct graphic_object;
+struct linear_object;
+
+struct object_spec {
+  unsigned long flags;
+  object_type type;
+  object_list oblist;
+  PTABLE(place) *tbl;
+  double dash_width;
+  position from;
+  position to;
+  position at;
+  position by;
+  path *with;
+  text_item *text;
+  double height;
+  double radius;
+  double width;
+  double segment_width;
+  double segment_height;
+  double start_chop;
+  double end_chop;
+  double thickness;
+  double fill;
+  direction dir;
+  segment *segment_list;
+  position segment_pos;
+  int segment_is_absolute;
+
+  object_spec(object_type);
+  ~object_spec();
+  object *make_object(position *, direction *);
+  graphic_object *make_box(position *, direction *);
+  graphic_object *make_block(position *, direction *);
+  graphic_object *make_text(position *, direction *);
+  graphic_object *make_ellipse(position *, direction *);
+  graphic_object *make_circle(position *, direction *);
+  linear_object *make_line(position *, direction *);
+  linear_object *make_arc(position *, direction *);
+  graphic_object *make_linear(position *, direction *);
+  graphic_object *make_move(position *, direction *);
+  int position_rectangle(rectangle_object *p, position *curpos,
+			 direction *dirp);
+};
+
+
+object *make_object(object_spec *, position *, direction *);
+
+object *make_mark_object();
+object *make_command_object(char *, const char *, int);
+
+int lookup_variable(const char *name, double *val);
+void define_variable(const char *name, double val);
+
+void print_picture(object *);
+
diff --git a/contrib/groff/pic/output.h b/contrib/groff/pic/output.h
new file mode 100644
index 000000000000..ac490db463e3
--- /dev/null
+++ b/contrib/groff/pic/output.h
@@ -0,0 +1,79 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+struct line_type {
+  enum { invisible, solid, dotted, dashed } type;
+  double dash_width;
+  double thickness;		// the thickness is in points
+
+  line_type();
+};
+
+
+class output {
+protected:
+  char *args;
+  double desired_height;	// zero if no height specified
+  double desired_width;		// zero if no depth specified
+  double compute_scale(double, const position &, const position &);
+public:
+  output();
+  virtual ~output();
+  void set_desired_width_height(double wid, double ht);
+  void set_args(const char *);
+  virtual void start_picture(double sc, const position &ll, const position &ur) = 0;
+  virtual void finish_picture() = 0;
+  virtual void circle(const position &, double rad,
+		      const line_type &, double) = 0;
+  virtual void text(const position &, text_piece *, int, double) = 0;
+  virtual void line(const position &, const position *, int n,
+		    const line_type &) = 0;
+  virtual void polygon(const position *, int n,
+		       const line_type &, double) = 0;
+  virtual void spline(const position &, const position *, int n,
+		      const line_type &) = 0;
+  virtual void arc(const position &, const position &, const position &,
+		   const line_type &) = 0;
+  virtual void ellipse(const position &, const distance &,
+		       const line_type &, double) = 0;
+  virtual void rounded_box(const position &, const distance &, double,
+			   const line_type &, double) = 0;
+  virtual void command(const char *, const char *, int);
+  virtual void set_location(const char *, int);
+  virtual int supports_filled_polygons();
+  virtual void begin_block(const position &ll, const position &ur);
+  virtual void end_block();
+};
+
+extern output *out;
+
+/* #define FIG_SUPPORT 1 */
+#define TEX_SUPPORT 1
+
+output *make_troff_output();
+
+#ifdef TEX_SUPPORT
+output *make_tex_output();
+output *make_tpic_output();
+#endif /* TEX_SUPPORT */
+
+#ifdef FIG_SUPPORT
+output *make_fig_output();
+#endif /* FIG_SUPPORT */
diff --git a/contrib/groff/pic/pic.cc b/contrib/groff/pic/pic.cc
new file mode 100644
index 000000000000..9e9e9f1ecf5f
--- /dev/null
+++ b/contrib/groff/pic/pic.cc
@@ -0,0 +1,5283 @@
+#if defined(__STDC__) || defined(__cplusplus)
+#define YYCONST const
+#define YYPARAMS(x) x
+#define YYDEFUN(name, arglist, args) name(args)
+#define YYAND ,
+#define YYPTR void *
+#else
+#define YYCONST
+#define YYPARAMS(x) ()
+#define YYDEFUN(name, arglist, args) name arglist args;
+#define YYAND ;
+#define YYPTR char *
+#endif
+#ifndef lint
+YYCONST static char yysccsid[] = "@(#)yaccpar	1.8 (Berkeley +Cygnus.28) 01/20/91";
+#endif
+#define YYBYACC 1
+#ifndef YYDONT_INCLUDE_STDIO
+#include <stdio.h>
+#endif
+#ifdef __cplusplus
+#include <stdlib.h> /* for malloc/realloc/free */
+#endif
+#line 20 "pic.y"
+#include "pic.h"
+#include "ptable.h"
+#include "object.h"
+
+extern int delim_flag;
+extern void do_copy(const char *);
+extern void copy_rest_thru(const char *, const char *);
+extern void copy_file_thru(const char *, const char *, const char *);
+extern void push_body(const char *);
+extern void do_for(char *var, double from, double to,
+		   int by_is_multiplicative, double by, char *body);
+extern void do_lookahead();
+
+#undef fmod
+#undef rand
+
+extern "C" {
+  double fmod(double, double);
+  int rand();
+}
+
+/* Maximum number of characters produced by printf("%g") */
+#define GDIGITS 14
+
+int yylex();
+void yyerror(const char *);
+
+void reset(const char *nm);
+void reset_all();
+
+place *lookup_label(const char *);
+void define_label(const char *label, const place *pl);
+
+direction current_direction;
+position current_position;
+
+implement_ptable(place)
+
+PTABLE(place) top_table;
+
+PTABLE(place) *current_table = &top_table;
+saved_state *current_saved_state = 0;
+
+object_list olist;
+
+const char *ordinal_postfix(int n);
+const char *object_type_name(object_type type);
+char *format_number(const char *form, double n);
+char *do_sprintf(const char *form, const double *v, int nv);
+
+#line 73 "pic.y"
+typedef union {
+	char *str;
+	int n;
+	double x;
+	struct { double x, y; } pair;
+	struct { double x; char *body; } if_data;
+	struct { char *str; const char *filename; int lineno; } lstr;
+	struct { double *v; int nv; int maxv; } dv;
+	struct { double val; int is_multiplicative; } by;
+	place pl;
+	object *obj;
+	corner crn;
+	path *pth;
+	object_spec *spec;
+	saved_state *pstate;
+	graphics_state state;
+	object_type obtype;
+} YYSTYPE;
+#line 95 "y.tab.c"
+#define LABEL 257
+#define VARIABLE 258
+#define NUMBER 259
+#define TEXT 260
+#define COMMAND_LINE 261
+#define DELIMITED 262
+#define ORDINAL 263
+#define TH 264
+#define LEFT_ARROW_HEAD 265
+#define RIGHT_ARROW_HEAD 266
+#define DOUBLE_ARROW_HEAD 267
+#define LAST 268
+#define UP 269
+#define DOWN 270
+#define LEFT 271
+#define RIGHT 272
+#define BOX 273
+#define CIRCLE 274
+#define ELLIPSE 275
+#define ARC 276
+#define LINE 277
+#define ARROW 278
+#define MOVE 279
+#define SPLINE 280
+#define HEIGHT 281
+#define RADIUS 282
+#define WIDTH 283
+#define DIAMETER 284
+#define FROM 285
+#define TO 286
+#define AT 287
+#define WITH 288
+#define BY 289
+#define THEN 290
+#define DOTTED 291
+#define DASHED 292
+#define CHOP 293
+#define SAME 294
+#define INVISIBLE 295
+#define LJUST 296
+#define RJUST 297
+#define ABOVE 298
+#define BELOW 299
+#define OF 300
+#define THE 301
+#define WAY 302
+#define BETWEEN 303
+#define AND 304
+#define HERE 305
+#define DOT_N 306
+#define DOT_E 307
+#define DOT_W 308
+#define DOT_S 309
+#define DOT_NE 310
+#define DOT_SE 311
+#define DOT_NW 312
+#define DOT_SW 313
+#define DOT_C 314
+#define DOT_START 315
+#define DOT_END 316
+#define DOT_X 317
+#define DOT_Y 318
+#define DOT_HT 319
+#define DOT_WID 320
+#define DOT_RAD 321
+#define SIN 322
+#define COS 323
+#define ATAN2 324
+#define LOG 325
+#define EXP 326
+#define SQRT 327
+#define K_MAX 328
+#define K_MIN 329
+#define INT 330
+#define RAND 331
+#define COPY 332
+#define THRU 333
+#define TOP 334
+#define BOTTOM 335
+#define UPPER 336
+#define LOWER 337
+#define SH 338
+#define PRINT 339
+#define CW 340
+#define CCW 341
+#define FOR 342
+#define DO 343
+#define IF 344
+#define ELSE 345
+#define ANDAND 346
+#define OROR 347
+#define NOTEQUAL 348
+#define EQUALEQUAL 349
+#define LESSEQUAL 350
+#define GREATEREQUAL 351
+#define LEFT_CORNER 352
+#define RIGHT_CORNER 353
+#define CENTER 354
+#define END 355
+#define START 356
+#define RESET 357
+#define UNTIL 358
+#define PLOT 359
+#define THICKNESS 360
+#define FILL 361
+#define ALIGNED 362
+#define SPRINTF 363
+#define COMMAND 364
+#define DEFINE 365
+#define UNDEF 366
+#define YYERRCODE 256
+static YYCONST short yylhs[] = {                                        -1,
+    0,    0,   16,   17,   17,   28,   28,   29,   29,   30,
+   30,   30,   30,   30,   30,   30,   30,   30,   31,   30,
+   30,   32,   33,   30,   34,   35,   30,   36,   30,   30,
+   37,   30,   30,   30,   38,   38,   38,   26,   26,   27,
+   27,   27,   39,    7,   23,   23,    2,    2,    3,    3,
+    3,    3,    3,    3,    3,    3,    3,    4,    4,    4,
+   15,   15,   15,   15,   40,   42,   15,   15,   41,   41,
+   18,   18,   18,   18,   18,   18,   18,   18,   18,   18,
+   18,   43,   18,   18,   18,   18,   18,   18,   18,   18,
+   18,   18,   18,   18,   18,   18,   18,   18,   18,   18,
+   18,   18,   18,   18,   18,   18,   18,   18,   18,   18,
+   18,   18,   18,   18,   18,   18,   18,   18,   18,   18,
+   18,   18,   18,   18,   25,   25,   24,   24,   19,   19,
+    6,    6,    6,    6,    6,    6,   44,   44,    5,    5,
+   13,   13,   13,   13,   13,   14,   14,   14,   22,   22,
+   21,   21,    8,    8,   20,   20,   20,   20,   20,   20,
+   20,   20,   20,   11,   11,   12,   12,   12,   10,   10,
+   10,   10,   10,   10,    9,    9,    9,    9,    9,    9,
+    9,    9,    9,    9,    9,    9,    9,    9,    9,    9,
+    9,    9,    9,    9,    9,    9,    9,    9,    9,    9,
+    9,    9,    1,    1,    1,    1,    1,    1,    1,    1,
+    1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+    1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+    1,    1,    1,    1,    1,    1,    1,
+};
+static YYCONST short yylen[] = {                                         2,
+    1,    1,    3,    1,    3,    0,    1,    1,    2,    3,
+    4,    1,    1,    1,    1,    1,    2,    2,    0,    3,
+    2,    0,    0,    7,    0,    0,    6,    0,   10,    1,
+    0,    4,    1,    1,    2,    2,    3,    1,    2,    1,
+    1,    1,    0,    5,    0,    2,    1,    1,    3,    3,
+    3,    3,    3,    3,    3,    3,    2,    0,    2,    3,
+    1,    4,    4,    4,    0,    0,    6,    1,    0,    1,
+    1,    1,    1,    1,    1,    1,    1,    1,    1,    2,
+    3,    0,    4,    3,    3,    3,    3,    2,    2,    3,
+    2,    3,    2,    3,    2,    3,    3,    3,    3,    3,
+    3,    2,    2,    3,    2,    3,    2,    3,    2,    3,
+    2,    2,    2,    2,    2,    2,    2,    2,    2,    2,
+    2,    2,    3,    2,    1,    5,    0,    3,    1,    1,
+    1,    3,    3,    5,    5,    6,    1,    4,    3,    3,
+    1,    2,    2,    3,    1,    1,    1,    3,    1,    3,
+    1,    2,    2,    2,    1,    1,    1,    1,    1,    1,
+    1,    2,    1,    2,    3,    1,    1,    2,    1,    5,
+    4,    3,    3,    2,    1,    1,    1,    1,    1,    1,
+    1,    1,    1,    1,    1,    1,    1,    1,    1,    2,
+    2,    2,    2,    1,    1,    2,    2,    2,    2,    1,
+    1,    1,    1,    1,    2,    2,    2,    2,    2,    3,
+    3,    3,    3,    3,    3,    2,    3,    4,    4,    6,
+    4,    4,    4,    6,    6,    4,    4,    3,    3,    3,
+    3,    3,    3,    3,    3,    3,    2,
+};
+static YYCONST short yydefred[] = {                                      0,
+    8,    0,    2,    0,    0,    0,    0,  125,   16,   12,
+   13,   14,   15,   71,   72,   73,   74,   75,   76,   77,
+   78,    0,   19,    0,    0,    0,    0,    0,    0,    0,
+   65,   82,    0,    4,    0,    0,   79,   68,    0,    9,
+    0,    0,    0,    0,   25,    0,  146,  203,  204,  149,
+  151,  188,  189,  145,  175,  176,  177,  178,  179,  180,
+  181,  182,  183,  184,  185,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,  186,  187,    0,    0,  194,
+  195,  200,  202,  201,    0,    0,    0,    0,    0,  131,
+  129,  147,    0,    0,    0,    0,    0,    0,   41,    0,
+   38,    0,    0,    0,    0,    0,    0,    0,    0,   35,
+    0,    0,    0,    0,    0,   31,    3,    0,  113,  114,
+  115,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,  102,    0,    0,    0,  111,  112,
+  119,  120,  121,  122,  116,  117,    0,    0,  124,    0,
+  118,   36,    0,    0,   10,    0,   22,    0,   20,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,  190,
+  192,  196,  198,  191,  193,  197,  199,    0,    0,    0,
+    0,    0,    0,    0,    0,  137,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,  205,  206,  207,  208,  209,    0,
+  142,    0,    0,  163,  155,  156,  157,  158,  159,  160,
+  161,    0,  154,  152,  153,   39,    0,    0,   57,    0,
+    0,    0,   43,    0,    0,    0,    0,   81,  127,    0,
+    0,    0,    0,    5,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,  166,  100,    0,  169,    0,    0,  101,    0,    0,
+    0,    0,    0,   37,    0,    0,    0,    0,    0,    0,
+   62,    0,   11,    0,   26,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,  228,    0,  217,  140,    0,  150,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,  148,
+  132,  133,  162,    0,    0,   53,    0,    0,    0,    0,
+    0,   51,    0,    0,   50,   49,    0,   66,   83,   32,
+  174,    0,    0,    0,    0,  164,    0,  168,    0,    0,
+   23,    0,  218,  219,    0,  221,  222,  223,    0,    0,
+  226,  227,    0,    0,    0,    0,    0,   44,    0,  126,
+    0,    0,  173,  172,    0,  165,    0,    0,   27,    0,
+    0,    0,  134,  138,    0,    0,    0,    0,   70,   67,
+  171,    0,   24,   46,  220,  224,  225,  136,    0,    0,
+  170,    0,    0,   28,    0,    0,   29,
+};
+static YYCONST short yydgoto[] = {                                       2,
+  105,  179,  107,  400,   90,   91,   33,   92,   93,  263,
+  264,  265,  108,   95,   34,    3,   35,   36,   96,  223,
+   97,   98,  379,  337,  109,  100,  101,  241,    5,   38,
+   46,  284,  377,  158,  352,  406,  243,   39,  330,  114,
+  390,  371,  115,  202,
+};
+static YYCONST short yysindex[] = {                                    -52,
+    0,    0,    0, 5205,  -46,    7,  -12,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0, -249,    0,10894, -198,11035, -186,11441,   51,10894,
+    0,    0, -251,    0,  -52,10595,    0,    0,  -42,    0,
+  -52,11035,   35, -236,    0, -145,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,   79,   80,   85,   87,   91,
+   94,   98,  101,  102,  107,    0,    0, -126,  -67,    0,
+    0,    0,    0,    0,11136,11035,11441,11441, 1187,    0,
+    0,    0,  -71, -250, 2230,  -10,  575,  426,    0,10894,
+    0,   71,11035,11035, 1220, -141, -305, -250, -291,    0,
+  -28, -101,10894,  -52,  -52,    0,    0, 9974,    0,    0,
+    0,11746,11746,11746,11746,11441,11441,11441,11441,11542,
+11542,11542, 4851,11645,    0,11746,11746,11746,    0,    0,
+    0,    0,    0,    0,    0,    0,11441,11746,    0, 1647,
+    0,    0,  -98,10233,    0,11035,    0, -100,    0,11035,
+11035,11035,11035,11035,11035,11035,11035,11035,10736,    0,
+    0,    0,    0,    0,    0,    0,    0, 1626,  141,  146,
+   42,  -73,   99,   99, -105,    0,11441,11441,11441,11441,
+11441,11441,11441,11542,11441,11441,11441,11441,11441,11441,
+11441,11542,  -18,  152,    0,    0,    0,    0,    0,  -56,
+    0,11645,11645,    0,    0,    0,    0,    0,    0,    0,
+    0,  120,    0,    0,    0,    0,11441,   99,    0,11035,
+11035,11441,    0,11035,11035, -242, -242,    0,    0,   89,
+ 5205,  125,  -41,    0, 1647, 1647, 1647, 1647, 1647, 1647,
+ 1647, 1647, 1187,  -10,  -10,  -10, 2121,  455,  575, 2121,
+  -33,    0,    0, 2134,    0,11237,  781,    0, 1647, 1647,
+ 1647, 1647, 1647,    0,    7,  -12,    0,    0,    0, -250,
+    0,  -10,    0,  -32,    0,  202,  203,  189,  207,  208,
+  210,  209,  217,  235,    0,  243,    0,    0,11542,    0,
+   -1, 1117, 1180,  739,  739,  357,  357, 1647,  -21,  192,
+  357,   46,   46,   99,   99,   99,   99,  -35,  152,    0,
+    0,    0,    0, 1076, 1117,    0, 1659,  -44,  357,   47,
+ 1117,    0, 1659,  -44,    0,    0,   10,    0,    0,    0,
+    0,  575, 2121, 2121,  264,    0,   67,    0, 1208,  146,
+    0,  -27,    0,    0,11035,    0,    0,    0,11035,11035,
+    0,    0,    2,   13,11542,11542,11441,    0,11441,    0,
+ 5205, 2121,    0,    0, 2121,    0,  -27,   65,    0,  285,
+  292,  293,    0,    0,  -14,  -10, 1619, 1647,    0,    0,
+    0,  299,    0,    0,    0,    0,    0,    0,11340,    1,
+    0,11441, 1647,    0, 1647,   86,    0,
+};
+static YYCONST short yyrindex[] = {                                     20,
+    0,    0,    0,  347,  150,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,   23,    0,    0,    0,
+    0,    0,   59,    0,  109,  212,    0,    0,  268,    0,
+10487,    0,    0,  287,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0, 8932,    0,
+    0,    0,    0, 4221, 8476, 9124,    0,    0,    0,  589,
+    0,    0,    0,    0,  181,    0,  721,    0,    0,    0,
+10102,    0,  615, 5629, 5629,    0,    0,  122,    0,    0,
+    0, 9441, 9481, 9223, 9331,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0, 9580, 9690, 9789,    0,    0,
+    0,    0,    0,    0,    0,    0,    0, 9829,    0, 4977,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,  308,    0,  213,
+    0,    0,  270,  602,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0, 2904,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0, 8437,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0, 5084, 5401, 5508, 5825, 5932, 6249,
+ 6356, 6673,    0, 6780, 7097, 7204,    0,    0,    0,    0,
+    0,    0,    0, 8782,    0,    0,    0,    0, 7521, 7628,
+ 7945, 8052, 8369,    0,10163, 2065,  135, 1861,   36,  591,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0, 3782, 4114, 3236, 3343, 2026, 2358, 4660, 8825,    0,
+ 2465, 1587, 1919,  709, 1041, 1148, 1480,    0, 3675,    0,
+    0,    0,    0,    0,  390,    0, 8929,  179, 2797,    0,
+   92,    0,  614,  720,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,  308,    0,
+    0,  652,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+  679,    0,    0,    0,    0,    0,  652,    0,    0,    0,
+    0,    0,    0,    0,    0, 4553,    8,   11,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,   12,    0,   14,    0,    0,
+};
+static YYCONST short yygindex[] = {                                      0,
+  -24,  627,  -77,    0,  -57,  196,    0,    0,   -5,    0,
+    0,  265, 1084,  -88, -117,  -40,    0,    0,  134,  -59,
+    0,    0,  -23,    0,   26,  323,  -60,    3,  325,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,
+};
+#define YYTABLESIZE 12102
+static YYCONST short yytable[] = {                                      89,
+  244,  153,    4,  111,  204,   89,    1,  212,  200,  213,
+   44,  150,   40,  198,  196,  200,  197,    8,  199,    6,
+  198,  196,   34,  197,   86,  199,  229,  180,  212,   37,
+  213,  232,  212,  195,  213,   63,  281,  117,  225,  226,
+  234,  235,  383,  154,  212,   43,  213,  398,   42,   99,
+  370,  128,  226,  369,  128,   99,  236,  237,   30,  102,
+  178,  151,  183,  184,   41,  201,  205,  206,  207,  208,
+  209,  110,  201,  240,  242,   89,  268,   86,  129,  228,
+  129,   34,  200,   45,  212,  299,  213,  198,   89,  211,
+  112,   52,  199,  116,   63,  156,  157,  245,  246,  247,
+  248,  249,  250,  251,  252,  253,  253,  253,    6,  267,
+    6,  269,  270,  271,  319,   34,  159,   30,  160,  161,
+   29,    7,  272,  273,  162,   99,  163,  262,   63,  253,
+  164,  227,   52,  165,   14,   52,  238,  166,   99,  201,
+  167,  168,    6,   37,  170,  171,  169,   34,  233,    7,
+   52,   30,  326,  328,  321,  322,  332,  334,  239,  274,
+   63,  285,  302,  303,  304,  305,  306,  307,  308,  309,
+  311,  312,  313,  314,  315,  316,  317,  253,   56,   37,
+   47,  297,    7,   30,   52,   47,  298,  267,  267,    7,
+  300,   50,  201,   14,    7,  301,   51,  210,  343,  344,
+  320,    6,  324,  174,  175,  325,  327,  329,  350,  331,
+  333,   61,  323,  338,    7,  152,   52,  339,  181,   56,
+  340,   47,   56,  346,   47,  172,  173,   14,  203,  351,
+  188,    8,  355,    6,  212,  365,  213,   56,   47,   47,
+    7,  349,  353,  354,   50,    7,    7,  356,  357,   51,
+  358,  262,  359,  389,  262,  131,  131,  131,  348,   14,
+  360,  335,  336,  254,  255,  256,   37,   33,  366,  216,
+   61,   56,    7,   47,  253,  361,    6,    6,  185,    6,
+    6,  186,  372,  362,  176,  177,   21,  282,    6,    6,
+    6,    6,    6,    6,    6,    6,    6,    6,    6,    6,
+  364,  234,  216,   56,   61,   47,  216,  375,  368,  216,
+  216,  216,  216,  216,  216,  384,  216,  187,  188,  189,
+  190,  191,  192,  376,  394,  395,   33,  310,  216,  216,
+  378,  216,  396,  397,   29,  318,   61,  262,  262,  401,
+  253,  253,  387,  404,  388,   21,    1,  407,   47,  279,
+   58,    6,  113,  393,   59,   52,   60,    6,    6,  118,
+   33,    6,  216,    6,    0,  216,  262,    0,    0,  262,
+    0,    0,    0,    0,  403,    0,    6,  405,    6,   21,
+    0,   52,    6,    6,    0,    0,    0,    0,    0,  235,
+    0,  188,   33,  200,  216,    0,   37,  188,  198,  196,
+    0,  197,  188,  199,    0,    0,    7,    7,    7,    7,
+    7,   21,    7,    0,    0,    0,    0,    7,    7,    7,
+    7,    7,    7,    7,    7,    7,    7,    7,    7,    7,
+  235,    0,  363,  235,  188,    0,    0,   52,   52,    0,
+    0,    0,   56,    0,   47,    0,    0,    0,  235,    0,
+  201,    0,    0,    0,    7,    7,    7,    7,    7,    7,
+    7,    7,    7,    7,    7,    7,    0,    0,   56,    0,
+   47,    7,    7,    7,    7,    7,    7,    7,    7,    7,
+    7,    7,  235,    7,    7,    7,    7,    7,    7,    0,
+    0,    7,    0,    7,    0,    0,    0,    0,  385,  386,
+    0,    7,    7,    7,    7,    7,    7,    0,    7,    0,
+    0,    0,    7,    7,  235,    0,  222,    0,    0,    0,
+    0,  341,    0,    0,  345,   56,  216,  216,  216,  216,
+    0,    0,  216,  216,  216,  216,  216,  216,  216,  216,
+  216,  216,    0,    0,    0,  222,    0,    0,    0,    0,
+  216,  216,  216,  216,  216,  216,  216,  216,  216,  216,
+  216,  216,  216,  216,  216,  216,  216,  216,  216,  216,
+    0,    0,  216,  216,  216,  216,  216,  216,  216,  216,
+  216,  216,  216,  216,  216,  216,    0,    0,   18,    0,
+   64,  216,  216,  216,  216,  216,  216,  216,  216,  216,
+  216,  237,    0,  216,  216,  216,  216,  373,  374,  216,
+  216,    0,  216,   55,   17,  216,  216,  216,  216,  216,
+  216,  216,  216,  216,  216,  216,    0,    0,    0,  216,
+  216,  216,  216,  130,  237,  130,  391,    0,  237,  392,
+    0,  237,  237,  237,  237,  237,  237,   18,  237,   64,
+    0,   45,  106,  235,   55,    0,    0,   55,    0,    0,
+  237,  237,    0,  237,    0,  222,    0,    0,  155,    0,
+    0,    0,   55,   17,    0,    0,    0,    0,   69,  235,
+    0,   18,    0,   64,    0,  214,    0,    0,    0,  235,
+    0,    0,  235,  224,  237,    0,    0,  237,  215,  216,
+  217,  218,  219,  220,    0,  221,   55,   17,  212,    0,
+   45,    0,  182,   18,  214,   64,    0,    0,    0,   54,
+   48,    0,  342,    0,    0,    0,  237,  215,  216,  217,
+  218,  219,  220,    0,  221,  235,  235,   69,   55,   17,
+    0,  212,    0,    0,   45,  212,    0,    0,  212,  212,
+  212,  212,  212,  212,    0,  212,    0,    0,    0,    0,
+   54,   48,    0,   54,   48,    0,    0,  212,  212,    0,
+  212,   69,    0,    0,    0,  200,   45,    0,   54,   48,
+  198,  196,  283,  197,    0,  199,  286,  287,  288,  289,
+  290,  291,  292,  293,  294,  296,    0,    0,  232,    0,
+  195,  212,    0,   69,  212,    0,    0,    0,    0,    0,
+    0,    0,   54,   48,    0,    0,    0,  200,    0,    0,
+    0,    0,  198,  196,  193,  197,    0,  199,    0,    0,
+    0,    0,  201,  212,  214,    0,    0,    0,    0,    0,
+  232,    0,  195,    0,   54,   48,    0,  215,  216,  217,
+  218,  219,  220,    0,  221,    0,    0,    0,  237,  237,
+  237,  237,    0,    0,  237,  237,  237,  237,  237,  237,
+  237,  237,  237,  237,  201,    0,    0,   55,    0,    0,
+    0,    0,  237,  237,  237,  237,  237,  237,  237,  237,
+  237,  237,  237,  237,  237,  237,  237,  237,  237,  237,
+  237,  237,    0,   55,  237,  237,  237,  237,  237,  237,
+  237,  237,  237,  237,  237,  237,  237,  237,    0,    0,
+    0,    0,    0,  237,  237,  237,  237,  237,  237,  237,
+  237,  237,  237,    0,    0,  237,  237,  237,  237,    0,
+    0,  237,  237,    0,  237,    0,    0,  237,  237,  237,
+  237,  237,  237,  237,  237,  237,  237,  237,    0,    0,
+   55,  237,  237,  237,  237,  212,  212,  212,  212,    0,
+    0,  212,  212,  212,  212,  212,  212,  212,  212,  212,
+  212,  380,    0,   54,   48,  381,  382,    0,    0,  212,
+  212,  212,  212,  212,  212,  212,  212,  212,  212,  212,
+  212,  212,  212,  212,  212,  212,  212,  212,  212,   54,
+   48,  212,  212,  212,  212,  212,  212,  212,  212,  212,
+  212,  212,  212,  212,  212,    0,    0,    0,    0,    0,
+  212,  212,  212,  212,  212,  212,  212,  212,  212,  212,
+  213,    0,  212,  212,  212,  212,    0,    0,  212,  212,
+    0,  212,    0,    0,  212,  212,  212,  212,  212,  212,
+  212,  212,  212,  212,  212,    0,   54,    0,  212,  212,
+  212,  212,    0,  213,    0,    0,    0,  213,    0,    0,
+  213,  213,  213,  213,  213,  213,    0,  213,  191,  192,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,  213,
+  213,    0,  213,    0,    0,    0,    0,   94,    0,    0,
+    0,    0,  200,   94,    0,    0,    0,  198,  196,    0,
+  197,    0,  199,    0,    0,    0,  187,  188,  189,  190,
+  191,  192,    0,  213,    0,  232,  213,  195,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,  214,    0,    0,
+    0,    0,    0,  200,    0,    0,    0,    0,  198,  196,
+    0,  197,    0,  199,    0,  213,    0,    0,   94,  201,
+    0,    0,    0,    0,    0,    0,  232,    0,  195,    0,
+  214,    0,    0,   94,  214,    0,    0,  214,  214,  214,
+  214,  214,  214,    0,  214,    0,   94,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,  214,  214,    0,  214,
+  201,    0,    0,   94,   94,   94,  200,    0,    0,    0,
+    0,  198,  196,  200,  197,    0,  199,    0,  198,  196,
+  193,  197,    0,  199,    0,    0,    0,  280,    0,  232,
+  214,  195,    0,  214,  200,    0,  194,    0,  195,  198,
+  196,  193,  197,    0,  199,    0,  200,    0,    0,    0,
+    0,  198,  196,    0,  197,    0,  199,  232,    0,  195,
+    0,    0,  214,  201,    0,    0,    0,   94,    0,  232,
+  201,  195,    0,    0,    0,   94,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,  213,  213,  213,
+  213,  201,    0,  213,  213,  213,  213,  213,  213,  213,
+  213,  213,  213,  201,    0,    0,    0,    0,    0,    0,
+    0,  213,  213,  213,  213,  213,  213,  213,  213,  213,
+  213,  213,  213,  213,  213,  213,  213,  213,  213,  213,
+  213,    0,    0,  213,  213,  213,  213,  213,  213,  213,
+  213,  213,  213,  213,  213,  213,  213,    0,    0,    0,
+    0,  367,  213,  213,  213,  213,  213,  213,  213,  213,
+  213,  213,    0,    0,  213,  213,  213,  213,    0,    0,
+  213,  213,   94,  213,    0,    0,  213,  213,  213,  213,
+  213,  213,  213,  213,  213,  213,  213,    0,    0,    0,
+  213,  213,  213,  213,  214,  214,  214,  214,    0,    0,
+  214,  214,  214,  214,  214,  214,  214,  214,  214,  214,
+    0,  187,  188,  189,  190,  191,  192,    0,  214,  214,
+  214,  214,  214,  214,  214,  214,  214,  214,  214,  214,
+  214,  214,  214,  214,  214,  214,  214,  214,   94,   94,
+  214,  214,  214,  214,  214,  214,  214,  214,  214,  214,
+  214,  214,  214,  214,  189,  190,  191,  192,    0,  214,
+  214,  214,  214,  214,  214,  214,  214,  214,  214,  215,
+    0,  214,  214,  214,  214,    0,  185,  214,  214,  186,
+  214,    0,    0,  214,  214,  214,  214,  214,  214,  214,
+  214,  214,  214,  214,    0,    0,    0,  214,  214,  214,
+  214,    0,  215,    0,    0,    0,  215,    0,    0,  215,
+  215,  215,  215,  215,  215,  187,  215,  189,  190,  191,
+  192,    0,  187,  188,  189,  190,  191,  192,  215,  215,
+    0,  215,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,  230,  231,  189,  190,  191,  192,    0,
+    0,    0,    0,    0,    0,  230,  231,  189,  190,  191,
+  192,    0,  215,    0,    0,  215,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,  210,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,  215,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,  210,
+    0,    0,    0,    0,    0,    0,  210,  210,    0,  210,
+  210,  210,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,  210,  210,    0,  210,    0,
+    0,    0,    0,    0,    0,  200,    0,    0,    0,    0,
+  198,  196,  200,  197,    0,  199,    0,  198,  196,  193,
+  197,    0,  199,    0,    0,    0,    0,    0,  232,  210,
+  195,    0,  210,  200,    0,  194,    0,  195,  198,  196,
+    0,  197,    0,  199,    0,  200,    0,    0,    0,    0,
+  198,  196,    0,  197,    0,  199,  232,    0,  195,    0,
+    0,  210,  201,    0,    0,    0,    0,    0,  232,  201,
+  195,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,  215,  215,  215,  215,
+  201,    0,  215,  215,  215,  215,  215,  215,  215,  215,
+  215,  215,  201,    0,    0,    0,    0,    0,    0,    0,
+  215,  215,  215,  215,  215,  215,  215,  215,  215,  215,
+  215,  215,  215,  215,  215,  215,  215,  215,  215,  215,
+    0,    0,  215,  215,  215,  215,  215,  215,  215,  215,
+  215,  215,  215,  215,  215,  215,    0,    0,    0,    0,
+    0,  215,  215,  215,  215,  215,  215,  215,  215,  215,
+  215,    0,    0,  215,  215,  215,  215,    0,    0,  215,
+  215,    0,  215,    0,    0,  215,  215,  215,  215,  215,
+  215,  215,  215,  215,  215,  215,    0,    0,    0,  215,
+  215,  215,  215,  210,  210,  210,  210,    0,    0,  210,
+  210,  210,  210,  210,  210,  210,  210,  210,  210,    0,
+   15,    0,    0,    0,    0,    0,    0,  210,  210,  210,
+  210,  210,  210,  210,  210,  210,  210,  210,  210,  210,
+  210,  210,  210,  210,  210,  210,  210,    0,    0,  210,
+  210,  210,  210,  210,  210,  210,  210,  210,  210,  210,
+  210,  210,  210,    0,    0,    0,    0,  399,  210,  210,
+  210,  210,  210,  210,  210,  210,  210,  210,  211,   15,
+  210,  210,  210,  210,    0,  185,  210,  210,  186,  210,
+    0,    0,  210,  210,  210,  210,  210,  210,  210,  210,
+  210,  210,  210,    0,    0,    0,  210,  210,  210,  210,
+    0,  211,    0,   15,    0,    0,  189,    0,  211,  211,
+    0,  211,  211,  211,  187,  188,  189,  190,  191,  192,
+    0,  230,  231,  189,  190,  191,  192,  211,  211,    0,
+  211,    0,    0,    0,    0,   15,    0,    0,    0,    0,
+    0,    0,  187,  188,  189,  190,  191,  192,    0,    0,
+    0,    0,    0,    0,  230,    0,  189,  190,  191,  192,
+    0,  211,    0,    0,  211,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,  230,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,  211,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,  230,    0,
+    0,    0,    0,    0,    0,  230,  230,    0,    0,  230,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,  230,  230,    0,  230,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,  203,    0,    0,    0,    0,  203,  203,  203,  203,
+    0,  203,    0,    0,    0,    0,    0,  189,  230,    0,
+    0,  230,    0,  189,  203,    0,  203,    0,  189,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+  230,    0,    0,    0,    0,    0,    0,    0,  203,    0,
+  189,    0,    0,    0,    0,    0,  261,    0,    0,    0,
+    0,    0,    0,    0,    0,  211,  211,  211,  211,  347,
+    0,  211,  211,  211,  211,  211,  211,  211,  211,  211,
+  211,    0,    0,    0,    0,    0,    0,    0,    0,  211,
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+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+   54,   55,   56,   57,   58,   59,   60,   61,   62,   63,
+   64,   65,    0,    0,    0,    0,    0,   66,   67,   68,
+   69,   70,   71,   72,   73,   74,   75,    0,    0,   76,
+   77,   78,   79,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,   80,   81,   82,
+   83,   84,
+};
+static YYCONST short yycheck[] = {                                      24,
+  118,   44,    0,   28,   93,   30,   59,   43,   37,   45,
+  260,   36,   59,   42,   43,   37,   45,  260,   47,    0,
+   42,   43,    0,   45,   96,   47,  104,   85,   43,    4,
+   45,   60,   43,   62,   45,    0,  154,   35,   98,  100,
+  346,  347,   41,   41,   43,   58,   45,   62,   61,   24,
+   41,   41,  113,   44,   44,   30,  348,  349,    0,  258,
+   85,   36,   87,   88,   58,   94,  317,  318,  319,  320,
+  321,  258,   94,  114,  115,  100,  134,   96,   43,  104,
+   45,   59,   37,  333,   43,   44,   45,   42,  113,   95,
+   40,    0,   47,  345,   59,   61,  333,  122,  123,  124,
+  125,  126,  127,  128,  129,  130,  131,  132,    0,  134,
+   91,  136,  137,  138,  203,   93,  262,   59,   40,   40,
+  363,    0,  147,  148,   40,  100,   40,  133,   93,  154,
+   40,   61,   41,   40,    0,   44,  111,   40,  113,   94,
+   40,   40,  123,  118,  271,  272,   40,  125,  290,    0,
+   59,   93,  230,  231,  212,  213,  234,  235,  260,  258,
+  125,  262,  187,  188,  189,  190,  191,  192,  193,  194,
+  195,  196,  197,  198,  199,  200,  201,  202,    0,  154,
+    0,   41,   33,  125,   93,  257,   41,  212,  213,   40,
+  264,  263,   94,   59,   45,  301,  268,   46,  258,  259,
+  257,   93,  227,  271,  272,  230,  231,  232,  266,  234,
+  235,    0,   93,  125,   93,  258,  125,   93,   85,   41,
+  262,   41,   44,  257,   44,  352,  353,   93,  300,  262,
+   96,  260,   44,  125,   43,   44,   45,   59,  257,   59,
+   91,  266,   41,   41,  263,   96,  125,   41,   41,  268,
+   41,  257,   44,  371,  260,   43,   44,   45,  264,  125,
+   44,  236,  237,  130,  131,  132,  241,    0,  304,    0,
+   59,   93,  123,   93,  299,   41,  257,  258,  300,  260,
+  261,  303,  342,   41,  352,  353,    0,  154,  269,  270,
+  271,  272,  273,  274,  275,  276,  277,  278,  279,  280,
+  302,  346,   33,  125,   93,  125,   37,   44,  262,   40,
+   41,   42,   43,   44,   45,  303,   47,  346,  347,  348,
+  349,  350,  351,  257,  260,   41,   59,  194,   59,   60,
+  358,   62,   41,   41,  363,  202,  125,  343,  344,   41,
+  365,  366,  367,  343,  369,   59,    0,  262,   41,  154,
+  343,  332,   30,  377,  343,  264,  343,  338,  339,   35,
+   93,  342,   93,  344,   -1,   96,  372,   -1,   -1,  375,
+   -1,   -1,   -1,   -1,  399,   -1,  357,  402,  359,   93,
+   -1,  290,  363,  364,   -1,   -1,   -1,   -1,   -1,    0,
+   -1,  257,  125,   37,  125,   -1,  371,  263,   42,   43,
+   -1,   45,  268,   47,   -1,   -1,  257,  258,  259,  260,
+  261,  125,  263,   -1,   -1,   -1,   -1,  268,  269,  270,
+  271,  272,  273,  274,  275,  276,  277,  278,  279,  280,
+   41,   -1,  299,   44,  300,   -1,   -1,  346,  347,   -1,
+   -1,   -1,  264,   -1,  264,   -1,   -1,   -1,   59,   -1,
+   94,   -1,   -1,   -1,  305,  306,  307,  308,  309,  310,
+  311,  312,  313,  314,  315,  316,   -1,   -1,  290,   -1,
+  290,  322,  323,  324,  325,  326,  327,  328,  329,  330,
+  331,  332,   93,  334,  335,  336,  337,  338,  339,   -1,
+   -1,  342,   -1,  344,   -1,   -1,   -1,   -1,  365,  366,
+   -1,  352,  353,  354,  355,  356,  357,   -1,  359,   -1,
+   -1,   -1,  363,  364,  125,   -1,   91,   -1,   -1,   -1,
+   -1,  257,   -1,   -1,  260,  347,  257,  258,  259,  260,
+   -1,   -1,  263,  264,  265,  266,  267,  268,  269,  270,
+  271,  272,   -1,   -1,   -1,   91,   -1,   -1,   -1,   -1,
+  281,  282,  283,  284,  285,  286,  287,  288,  289,  290,
+  291,  292,  293,  294,  295,  296,  297,  298,  299,  300,
+   -1,   -1,  303,  304,  305,  306,  307,  308,  309,  310,
+  311,  312,  313,  314,  315,  316,   -1,   -1,    0,   -1,
+    0,  322,  323,  324,  325,  326,  327,  328,  329,  330,
+  331,    0,   -1,  334,  335,  336,  337,  343,  344,  340,
+  341,   -1,  343,    0,    0,  346,  347,  348,  349,  350,
+  351,  352,  353,  354,  355,  356,   -1,   -1,   -1,  360,
+  361,  362,  363,   43,   33,   45,  372,   -1,   37,  375,
+   -1,   40,   41,   42,   43,   44,   45,   59,   47,   59,
+   -1,    0,   26,  264,   41,   -1,   -1,   44,   -1,   -1,
+   59,   60,   -1,   62,   -1,   91,   -1,   -1,   42,   -1,
+   -1,   -1,   59,   59,   -1,   -1,   -1,   -1,    0,  290,
+   -1,   93,   -1,   93,   -1,  260,   -1,   -1,   -1,  300,
+   -1,   -1,  303,  268,   93,   -1,   -1,   96,  273,  274,
+  275,  276,  277,  278,   -1,  280,   93,   93,    0,   -1,
+   59,   -1,   86,  125,  260,  125,   -1,   -1,   -1,    0,
+    0,   -1,  268,   -1,   -1,   -1,  125,  273,  274,  275,
+  276,  277,  278,   -1,  280,  346,  347,   59,  125,  125,
+   -1,   33,   -1,   -1,   93,   37,   -1,   -1,   40,   41,
+   42,   43,   44,   45,   -1,   47,   -1,   -1,   -1,   -1,
+   41,   41,   -1,   44,   44,   -1,   -1,   59,   60,   -1,
+   62,   93,   -1,   -1,   -1,   37,  125,   -1,   59,   59,
+   42,   43,  156,   45,   -1,   47,  160,  161,  162,  163,
+  164,  165,  166,  167,  168,  169,   -1,   -1,   60,   -1,
+   62,   93,   -1,  125,   96,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   93,   93,   -1,   -1,   -1,   37,   -1,   -1,
+   -1,   -1,   42,   43,   44,   45,   -1,   47,   -1,   -1,
+   -1,   -1,   94,  125,  260,   -1,   -1,   -1,   -1,   -1,
+   60,   -1,   62,   -1,  125,  125,   -1,  273,  274,  275,
+  276,  277,  278,   -1,  280,   -1,   -1,   -1,  257,  258,
+  259,  260,   -1,   -1,  263,  264,  265,  266,  267,  268,
+  269,  270,  271,  272,   94,   -1,   -1,  264,   -1,   -1,
+   -1,   -1,  281,  282,  283,  284,  285,  286,  287,  288,
+  289,  290,  291,  292,  293,  294,  295,  296,  297,  298,
+  299,  300,   -1,  290,  303,  304,  305,  306,  307,  308,
+  309,  310,  311,  312,  313,  314,  315,  316,   -1,   -1,
+   -1,   -1,   -1,  322,  323,  324,  325,  326,  327,  328,
+  329,  330,  331,   -1,   -1,  334,  335,  336,  337,   -1,
+   -1,  340,  341,   -1,  343,   -1,   -1,  346,  347,  348,
+  349,  350,  351,  352,  353,  354,  355,  356,   -1,   -1,
+  347,  360,  361,  362,  363,  257,  258,  259,  260,   -1,
+   -1,  263,  264,  265,  266,  267,  268,  269,  270,  271,
+  272,  355,   -1,  264,  264,  359,  360,   -1,   -1,  281,
+  282,  283,  284,  285,  286,  287,  288,  289,  290,  291,
+  292,  293,  294,  295,  296,  297,  298,  299,  300,  290,
+  290,  303,  304,  305,  306,  307,  308,  309,  310,  311,
+  312,  313,  314,  315,  316,   -1,   -1,   -1,   -1,   -1,
+  322,  323,  324,  325,  326,  327,  328,  329,  330,  331,
+    0,   -1,  334,  335,  336,  337,   -1,   -1,  340,  341,
+   -1,  343,   -1,   -1,  346,  347,  348,  349,  350,  351,
+  352,  353,  354,  355,  356,   -1,  347,   -1,  360,  361,
+  362,  363,   -1,   33,   -1,   -1,   -1,   37,   -1,   -1,
+   40,   41,   42,   43,   44,   45,   -1,   47,  350,  351,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   59,
+   60,   -1,   62,   -1,   -1,   -1,   -1,   24,   -1,   -1,
+   -1,   -1,   37,   30,   -1,   -1,   -1,   42,   43,   -1,
+   45,   -1,   47,   -1,   -1,   -1,  346,  347,  348,  349,
+  350,  351,   -1,   93,   -1,   60,   96,   62,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,    0,   -1,   -1,
+   -1,   -1,   -1,   37,   -1,   -1,   -1,   -1,   42,   43,
+   -1,   45,   -1,   47,   -1,  125,   -1,   -1,   85,   94,
+   -1,   -1,   -1,   -1,   -1,   -1,   60,   -1,   62,   -1,
+   33,   -1,   -1,  100,   37,   -1,   -1,   40,   41,   42,
+   43,   44,   45,   -1,   47,   -1,  113,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   59,   60,   -1,   62,
+   94,   -1,   -1,  130,  131,  132,   37,   -1,   -1,   -1,
+   -1,   42,   43,   37,   45,   -1,   47,   -1,   42,   43,
+   44,   45,   -1,   47,   -1,   -1,   -1,  154,   -1,   60,
+   93,   62,   -1,   96,   37,   -1,   60,   -1,   62,   42,
+   43,   44,   45,   -1,   47,   -1,   37,   -1,   -1,   -1,
+   -1,   42,   43,   -1,   45,   -1,   47,   60,   -1,   62,
+   -1,   -1,  125,   94,   -1,   -1,   -1,  194,   -1,   60,
+   94,   62,   -1,   -1,   -1,  202,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  257,  258,  259,
+  260,   94,   -1,  263,  264,  265,  266,  267,  268,  269,
+  270,  271,  272,   94,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,  281,  282,  283,  284,  285,  286,  287,  288,  289,
+  290,  291,  292,  293,  294,  295,  296,  297,  298,  299,
+  300,   -1,   -1,  303,  304,  305,  306,  307,  308,  309,
+  310,  311,  312,  313,  314,  315,  316,   -1,   -1,   -1,
+   -1,  286,  322,  323,  324,  325,  326,  327,  328,  329,
+  330,  331,   -1,   -1,  334,  335,  336,  337,   -1,   -1,
+  340,  341,  299,  343,   -1,   -1,  346,  347,  348,  349,
+  350,  351,  352,  353,  354,  355,  356,   -1,   -1,   -1,
+  360,  361,  362,  363,  257,  258,  259,  260,   -1,   -1,
+  263,  264,  265,  266,  267,  268,  269,  270,  271,  272,
+   -1,  346,  347,  348,  349,  350,  351,   -1,  281,  282,
+  283,  284,  285,  286,  287,  288,  289,  290,  291,  292,
+  293,  294,  295,  296,  297,  298,  299,  300,  365,  366,
+  303,  304,  305,  306,  307,  308,  309,  310,  311,  312,
+  313,  314,  315,  316,  348,  349,  350,  351,   -1,  322,
+  323,  324,  325,  326,  327,  328,  329,  330,  331,    0,
+   -1,  334,  335,  336,  337,   -1,  300,  340,  341,  303,
+  343,   -1,   -1,  346,  347,  348,  349,  350,  351,  352,
+  353,  354,  355,  356,   -1,   -1,   -1,  360,  361,  362,
+  363,   -1,   33,   -1,   -1,   -1,   37,   -1,   -1,   40,
+   41,   42,   43,   44,   45,  346,   47,  348,  349,  350,
+  351,   -1,  346,  347,  348,  349,  350,  351,   59,   60,
+   -1,   62,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  346,  347,  348,  349,  350,  351,   -1,
+   -1,   -1,   -1,   -1,   -1,  346,  347,  348,  349,  350,
+  351,   -1,   93,   -1,   -1,   96,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,    0,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  125,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   33,
+   -1,   -1,   -1,   -1,   -1,   -1,   40,   41,   -1,   43,
+   44,   45,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   59,   60,   -1,   62,   -1,
+   -1,   -1,   -1,   -1,   -1,   37,   -1,   -1,   -1,   -1,
+   42,   43,   37,   45,   -1,   47,   -1,   42,   43,   44,
+   45,   -1,   47,   -1,   -1,   -1,   -1,   -1,   60,   93,
+   62,   -1,   96,   37,   -1,   60,   -1,   62,   42,   43,
+   -1,   45,   -1,   47,   -1,   37,   -1,   -1,   -1,   -1,
+   42,   43,   -1,   45,   -1,   47,   60,   -1,   62,   -1,
+   -1,  125,   94,   -1,   -1,   -1,   -1,   -1,   60,   94,
+   62,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,  257,  258,  259,  260,
+   94,   -1,  263,  264,  265,  266,  267,  268,  269,  270,
+  271,  272,   94,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  281,  282,  283,  284,  285,  286,  287,  288,  289,  290,
+  291,  292,  293,  294,  295,  296,  297,  298,  299,  300,
+   -1,   -1,  303,  304,  305,  306,  307,  308,  309,  310,
+  311,  312,  313,  314,  315,  316,   -1,   -1,   -1,   -1,
+   -1,  322,  323,  324,  325,  326,  327,  328,  329,  330,
+  331,   -1,   -1,  334,  335,  336,  337,   -1,   -1,  340,
+  341,   -1,  343,   -1,   -1,  346,  347,  348,  349,  350,
+  351,  352,  353,  354,  355,  356,   -1,   -1,   -1,  360,
+  361,  362,  363,  257,  258,  259,  260,   -1,   -1,  263,
+  264,  265,  266,  267,  268,  269,  270,  271,  272,   -1,
+    0,   -1,   -1,   -1,   -1,   -1,   -1,  281,  282,  283,
+  284,  285,  286,  287,  288,  289,  290,  291,  292,  293,
+  294,  295,  296,  297,  298,  299,  300,   -1,   -1,  303,
+  304,  305,  306,  307,  308,  309,  310,  311,  312,  313,
+  314,  315,  316,   -1,   -1,   -1,   -1,  289,  322,  323,
+  324,  325,  326,  327,  328,  329,  330,  331,    0,   59,
+  334,  335,  336,  337,   -1,  300,  340,  341,  303,  343,
+   -1,   -1,  346,  347,  348,  349,  350,  351,  352,  353,
+  354,  355,  356,   -1,   -1,   -1,  360,  361,  362,  363,
+   -1,   33,   -1,   93,   -1,   -1,   96,   -1,   40,   41,
+   -1,   43,   44,   45,  346,  347,  348,  349,  350,  351,
+   -1,  346,  347,  348,  349,  350,  351,   59,   60,   -1,
+   62,   -1,   -1,   -1,   -1,  125,   -1,   -1,   -1,   -1,
+   -1,   -1,  346,  347,  348,  349,  350,  351,   -1,   -1,
+   -1,   -1,   -1,   -1,  346,   -1,  348,  349,  350,  351,
+   -1,   93,   -1,   -1,   96,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,    0,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  125,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   33,   -1,
+   -1,   -1,   -1,   -1,   -1,   40,   41,   -1,   -1,   44,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   59,   60,   -1,   62,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   37,   -1,   -1,   -1,   -1,   42,   43,   44,   45,
+   -1,   47,   -1,   -1,   -1,   -1,   -1,  257,   93,   -1,
+   -1,   96,   -1,  263,   60,   -1,   62,   -1,  268,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  125,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   94,   -1,
+  300,   -1,   -1,   -1,   -1,   -1,   46,   -1,   -1,   -1,
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+   -1,  360,  361,  362,   -1,   -1,   -1,   -1,  306,  307,
+  308,  309,  310,  311,  312,  313,  314,  315,  316,  317,
+  318,  319,  320,  321,   -1,   -1,   -1,   -1,   -1,  257,
+  258,  259,  260,  261,   -1,  263,  334,  335,  336,  337,
+  268,  269,  270,  271,  272,  273,  274,  275,  276,  277,
+  278,  279,  280,   -1,  352,  353,  354,  355,  356,   33,
+   -1,   -1,   -1,   -1,   -1,   -1,   40,   -1,   -1,   -1,
+   -1,   45,   -1,   -1,   -1,   -1,   -1,  305,  306,  307,
+  308,  309,  310,  311,  312,  313,  314,  315,  316,   -1,
+   -1,   -1,   -1,   -1,  322,  323,  324,  325,  326,  327,
+  328,  329,  330,  331,  332,   -1,  334,  335,  336,  337,
+  338,  339,   -1,   -1,  342,   -1,  344,   91,   -1,   -1,
+   -1,   -1,   96,   -1,  352,  353,  354,  355,  356,  357,
+   -1,  359,   -1,   -1,   -1,  363,  364,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  123,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   33,   -1,   -1,
+   -1,   -1,   -1,   -1,   40,   -1,   -1,   -1,   -1,   45,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   96,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  257,  258,  259,  260,  261,   -1,  263,
+   -1,   -1,   -1,   -1,  268,  269,  270,  271,  272,  273,
+  274,  275,  276,  277,  278,  279,  280,   -1,   33,   -1,
+   -1,   -1,   -1,   -1,   -1,   40,   41,   -1,   -1,   -1,
+   45,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,  305,  306,  307,  308,  309,  310,  311,  312,  313,
+  314,  315,  316,   -1,   -1,   -1,   -1,   -1,  322,  323,
+  324,  325,  326,  327,  328,  329,  330,  331,  332,   -1,
+  334,  335,  336,  337,  338,  339,   -1,   -1,  342,   -1,
+  344,   96,   -1,   -1,   -1,   -1,   -1,   -1,  352,  353,
+  354,  355,  356,  357,   -1,  359,   -1,   -1,   -1,  363,
+  364,  257,  258,  259,  260,   -1,   -1,  263,   -1,  265,
+  266,  267,  268,  269,  270,  271,  272,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  281,  282,  283,  284,  285,
+  286,  287,  288,  289,  290,  291,  292,  293,  294,  295,
+  296,  297,  298,  299,   -1,   -1,   -1,   -1,   -1,  305,
+  306,  307,  308,  309,  310,  311,  312,  313,  314,  315,
+  316,   -1,   -1,   -1,   -1,   -1,  322,  323,  324,  325,
+  326,  327,  328,  329,  330,  331,   33,   -1,  334,  335,
+  336,  337,   -1,   40,  340,  341,   -1,   -1,   45,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,  352,  353,  354,  355,
+  356,   -1,   -1,   -1,  360,  361,  362,  363,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   96,
+   -1,   -1,  257,  258,  259,  260,   -1,   -1,  263,   -1,
+   -1,   -1,   -1,  268,   -1,   -1,  271,  272,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  305,  306,  307,  308,  309,  310,  311,  312,  313,  314,
+  315,  316,   -1,   -1,   -1,   -1,   -1,  322,  323,  324,
+  325,  326,  327,  328,  329,  330,  331,   33,   -1,  334,
+  335,  336,  337,   -1,   40,   -1,   -1,   -1,   -1,   45,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  352,  353,  354,
+  355,  356,   -1,   -1,   -1,   -1,   -1,   -1,  363,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   96,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  257,  258,  259,  260,   -1,   -1,  263,   -1,   -1,   -1,
+   -1,  268,   -1,   -1,  271,  272,   -1,   -1,   33,   -1,
+   -1,   -1,   -1,   -1,   -1,   40,   -1,   -1,   -1,   -1,
+   45,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  305,  306,
+  307,  308,  309,  310,  311,  312,  313,  314,  315,  316,
+   -1,   -1,   -1,   -1,   -1,  322,  323,  324,  325,  326,
+  327,  328,  329,  330,  331,   -1,   -1,  334,  335,  336,
+  337,   96,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  352,  353,  354,  355,  356,
+   -1,   -1,   -1,   -1,   -1,   -1,  363,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   33,
+   -1,   -1,   -1,   -1,   -1,   -1,   40,   -1,   -1,   -1,
+   -1,   45,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,  257,  258,  259,  260,   -1,   -1,  263,   -1,   -1,
+   -1,   -1,  268,   -1,   -1,  271,  272,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   96,   -1,   -1,   -1,   -1,   -1,   -1,  305,
+  306,  307,  308,  309,  310,  311,  312,  313,  314,  315,
+  316,   -1,   -1,   -1,   -1,   -1,  322,  323,  324,  325,
+  326,  327,  328,  329,  330,  331,   -1,   -1,  334,  335,
+  336,  337,   33,   -1,   -1,   -1,   -1,   -1,   -1,   40,
+   -1,   42,   -1,   -1,   45,   -1,  352,  353,  354,  355,
+  356,   -1,  257,  258,  259,  260,   -1,  363,  263,   -1,
+   -1,   -1,   -1,  268,   -1,   -1,  271,  272,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   96,   -1,   -1,   -1,   -1,
+  305,  306,  307,  308,  309,  310,  311,  312,  313,  314,
+  315,  316,   -1,   -1,   -1,   -1,   -1,  322,  323,  324,
+  325,  326,  327,  328,  329,  330,  331,   -1,   -1,  334,
+  335,  336,  337,   33,   -1,   -1,   -1,   -1,   -1,   -1,
+   40,   -1,   -1,   -1,   -1,   45,   -1,  352,  353,  354,
+  355,  356,   -1,  257,  258,  259,  260,   -1,  363,  263,
+   -1,   -1,   -1,   -1,  268,   -1,   -1,  271,  272,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   96,   -1,   -1,   -1,
+   -1,  305,  306,  307,  308,  309,  310,  311,  312,  313,
+  314,  315,  316,   -1,   -1,   -1,   -1,   -1,  322,  323,
+  324,  325,  326,  327,  328,  329,  330,  331,   -1,   -1,
+  334,  335,  336,  337,   33,   -1,   -1,   -1,   -1,   -1,
+   -1,   40,   -1,   -1,   -1,   -1,   45,   -1,  352,  353,
+  354,  355,  356,   -1,   -1,   -1,  257,  258,  259,  363,
+   -1,   -1,  263,   -1,   -1,   -1,   -1,  268,   -1,   -1,
+  271,  272,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   96,   -1,   -1,
+   -1,   -1,   -1,   -1,  305,  306,  307,  308,  309,  310,
+  311,  312,  313,  314,  315,  316,   -1,   -1,   -1,   -1,
+   -1,  322,  323,  324,  325,  326,  327,  328,  329,  330,
+  331,   -1,   -1,  334,  335,  336,  337,   33,   -1,   -1,
+   -1,   -1,   -1,   -1,   40,   -1,   -1,   -1,   -1,   45,
+   -1,  352,  353,  354,  355,  356,   -1,  257,  258,  259,
+   -1,   -1,   -1,  263,   -1,   -1,   -1,   -1,  268,   -1,
+   -1,  271,  272,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   96,   -1,   -1,   -1,   -1,  305,  306,  307,  308,  309,
+  310,  311,  312,  313,  314,  315,  316,   -1,   -1,   -1,
+   -1,   -1,  322,  323,  324,  325,  326,  327,  328,  329,
+  330,  331,   -1,   -1,  334,  335,  336,  337,   33,   -1,
+   -1,   -1,   -1,   -1,   -1,   40,   -1,   -1,   -1,   -1,
+   45,   -1,  352,  353,  354,  355,  356,   -1,  257,  258,
+  259,   -1,   -1,   -1,  263,   -1,   -1,   -1,   -1,  268,
+   -1,   -1,  271,  272,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   96,   -1,   -1,   -1,   -1,  305,  306,  307,  308,
+  309,  310,  311,  312,  313,  314,  315,  316,   -1,   -1,
+   -1,   -1,   -1,  322,  323,  324,  325,  326,  327,  328,
+  329,  330,  331,   -1,   -1,  334,  335,  336,  337,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  352,  353,  354,  355,  356,   -1,   -1,
+   -1,  257,  258,  259,   -1,   -1,   -1,  263,   -1,   -1,
+   -1,   -1,  268,   -1,   -1,  271,  272,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  305,
+  306,  307,  308,  309,  310,  311,  312,  313,  314,  315,
+  316,   -1,   -1,   -1,   -1,   -1,  322,  323,  324,  325,
+  326,  327,  328,  329,  330,  331,   -1,   -1,  334,  335,
+  336,  337,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,  352,  353,  354,  355,
+  356,   -1,  257,  258,  259,   -1,   -1,   -1,  263,   -1,
+   -1,   -1,   -1,  268,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  305,  306,  307,  308,  309,  310,  311,  312,  313,  314,
+  315,  316,   -1,   -1,   -1,   -1,   -1,  322,  323,  324,
+  325,  326,  327,  328,  329,  330,  331,   -1,   -1,  334,
+  335,  336,  337,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  352,  353,  354,
+  355,  356,
+};
+#define YYFINAL 2
+#ifndef YYDEBUG
+#define YYDEBUG 0
+#endif
+#define YYMAXTOKEN 366
+#if YYDEBUG
+static YYCONST char *YYCONST yyname[] = {
+"end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+"'!'",0,0,0,"'%'",0,0,"'('","')'","'*'","'+'","','","'-'","'.'","'/'",0,0,0,0,0,
+0,0,0,0,0,"':'","';'","'<'","'='","'>'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,"'['",0,"']'","'^'",0,"'`'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,"'{'",0,"'}'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"LABEL","VARIABLE","NUMBER",
+"TEXT","COMMAND_LINE","DELIMITED","ORDINAL","TH","LEFT_ARROW_HEAD",
+"RIGHT_ARROW_HEAD","DOUBLE_ARROW_HEAD","LAST","UP","DOWN","LEFT","RIGHT","BOX",
+"CIRCLE","ELLIPSE","ARC","LINE","ARROW","MOVE","SPLINE","HEIGHT","RADIUS",
+"WIDTH","DIAMETER","FROM","TO","AT","WITH","BY","THEN","DOTTED","DASHED","CHOP",
+"SAME","INVISIBLE","LJUST","RJUST","ABOVE","BELOW","OF","THE","WAY","BETWEEN",
+"AND","HERE","DOT_N","DOT_E","DOT_W","DOT_S","DOT_NE","DOT_SE","DOT_NW",
+"DOT_SW","DOT_C","DOT_START","DOT_END","DOT_X","DOT_Y","DOT_HT","DOT_WID",
+"DOT_RAD","SIN","COS","ATAN2","LOG","EXP","SQRT","K_MAX","K_MIN","INT","RAND",
+"COPY","THRU","TOP","BOTTOM","UPPER","LOWER","SH","PRINT","CW","CCW","FOR","DO",
+"IF","ELSE","ANDAND","OROR","NOTEQUAL","EQUALEQUAL","LESSEQUAL","GREATEREQUAL",
+"LEFT_CORNER","RIGHT_CORNER","CENTER","END","START","RESET","UNTIL","PLOT",
+"THICKNESS","FILL","ALIGNED","SPRINTF","COMMAND","DEFINE","UNDEF",
+};
+static YYCONST char *YYCONST yyrule[] = {
+"$accept : top",
+"top : optional_separator",
+"top : element_list",
+"element_list : optional_separator middle_element_list optional_separator",
+"middle_element_list : element",
+"middle_element_list : middle_element_list separator element",
+"optional_separator :",
+"optional_separator : separator",
+"separator : ';'",
+"separator : separator ';'",
+"placeless_element : VARIABLE '=' any_expr",
+"placeless_element : VARIABLE ':' '=' any_expr",
+"placeless_element : UP",
+"placeless_element : DOWN",
+"placeless_element : LEFT",
+"placeless_element : RIGHT",
+"placeless_element : COMMAND_LINE",
+"placeless_element : COMMAND print_args",
+"placeless_element : PRINT print_args",
+"$$1 :",
+"placeless_element : SH $$1 DELIMITED",
+"placeless_element : COPY TEXT",
+"$$2 :",
+"$$3 :",
+"placeless_element : COPY TEXT THRU $$2 DELIMITED $$3 until",
+"$$4 :",
+"$$5 :",
+"placeless_element : COPY THRU $$4 DELIMITED $$5 until",
+"$$6 :",
+"placeless_element : FOR VARIABLE '=' expr TO expr optional_by DO $$6 DELIMITED",
+"placeless_element : simple_if",
+"$$7 :",
+"placeless_element : simple_if ELSE $$7 DELIMITED",
+"placeless_element : reset_variables",
+"placeless_element : RESET",
+"reset_variables : RESET VARIABLE",
+"reset_variables : reset_variables VARIABLE",
+"reset_variables : reset_variables ',' VARIABLE",
+"print_args : print_arg",
+"print_args : print_args print_arg",
+"print_arg : expr",
+"print_arg : text",
+"print_arg : position",
+"$$8 :",
+"simple_if : IF any_expr THEN $$8 DELIMITED",
+"until :",
+"until : UNTIL TEXT",
+"any_expr : expr",
+"any_expr : text_expr",
+"text_expr : text EQUALEQUAL text",
+"text_expr : text NOTEQUAL text",
+"text_expr : text_expr ANDAND text_expr",
+"text_expr : text_expr ANDAND expr",
+"text_expr : expr ANDAND text_expr",
+"text_expr : text_expr OROR text_expr",
+"text_expr : text_expr OROR expr",
+"text_expr : expr OROR text_expr",
+"text_expr : '!' text_expr",
+"optional_by :",
+"optional_by : BY expr",
+"optional_by : BY '*' expr",
+"element : object_spec",
+"element : LABEL ':' optional_separator element",
+"element : LABEL ':' optional_separator position_not_place",
+"element : LABEL ':' optional_separator place",
+"$$9 :",
+"$$10 :",
+"element : '{' $$9 element_list '}' $$10 optional_element",
+"element : placeless_element",
+"optional_element :",
+"optional_element : element",
+"object_spec : BOX",
+"object_spec : CIRCLE",
+"object_spec : ELLIPSE",
+"object_spec : ARC",
+"object_spec : LINE",
+"object_spec : ARROW",
+"object_spec : MOVE",
+"object_spec : SPLINE",
+"object_spec : text",
+"object_spec : PLOT expr",
+"object_spec : PLOT expr text",
+"$$11 :",
+"object_spec : '[' $$11 element_list ']'",
+"object_spec : object_spec HEIGHT expr",
+"object_spec : object_spec RADIUS expr",
+"object_spec : object_spec WIDTH expr",
+"object_spec : object_spec DIAMETER expr",
+"object_spec : object_spec expr",
+"object_spec : object_spec UP",
+"object_spec : object_spec UP expr",
+"object_spec : object_spec DOWN",
+"object_spec : object_spec DOWN expr",
+"object_spec : object_spec RIGHT",
+"object_spec : object_spec RIGHT expr",
+"object_spec : object_spec LEFT",
+"object_spec : object_spec LEFT expr",
+"object_spec : object_spec FROM position",
+"object_spec : object_spec TO position",
+"object_spec : object_spec AT position",
+"object_spec : object_spec WITH path",
+"object_spec : object_spec BY expr_pair",
+"object_spec : object_spec THEN",
+"object_spec : object_spec DOTTED",
+"object_spec : object_spec DOTTED expr",
+"object_spec : object_spec DASHED",
+"object_spec : object_spec DASHED expr",
+"object_spec : object_spec FILL",
+"object_spec : object_spec FILL expr",
+"object_spec : object_spec CHOP",
+"object_spec : object_spec CHOP expr",
+"object_spec : object_spec SAME",
+"object_spec : object_spec INVISIBLE",
+"object_spec : object_spec LEFT_ARROW_HEAD",
+"object_spec : object_spec RIGHT_ARROW_HEAD",
+"object_spec : object_spec DOUBLE_ARROW_HEAD",
+"object_spec : object_spec CW",
+"object_spec : object_spec CCW",
+"object_spec : object_spec text",
+"object_spec : object_spec LJUST",
+"object_spec : object_spec RJUST",
+"object_spec : object_spec ABOVE",
+"object_spec : object_spec BELOW",
+"object_spec : object_spec THICKNESS expr",
+"object_spec : object_spec ALIGNED",
+"text : TEXT",
+"text : SPRINTF '(' TEXT sprintf_args ')'",
+"sprintf_args :",
+"sprintf_args : sprintf_args ',' expr",
+"position : position_not_place",
+"position : place",
+"position_not_place : expr_pair",
+"position_not_place : position '+' expr_pair",
+"position_not_place : position '-' expr_pair",
+"position_not_place : '(' position ',' position ')'",
+"position_not_place : expr between position AND position",
+"position_not_place : expr '<' position ',' position '>'",
+"between : BETWEEN",
+"between : OF THE WAY BETWEEN",
+"expr_pair : expr ',' expr",
+"expr_pair : '(' expr_pair ')'",
+"place : label",
+"place : label corner",
+"place : corner label",
+"place : corner OF label",
+"place : HERE",
+"label : LABEL",
+"label : nth_primitive",
+"label : label '.' LABEL",
+"ordinal : ORDINAL",
+"ordinal : '`' any_expr TH",
+"optional_ordinal_last : LAST",
+"optional_ordinal_last : ordinal LAST",
+"nth_primitive : ordinal object_type",
+"nth_primitive : optional_ordinal_last object_type",
+"object_type : BOX",
+"object_type : CIRCLE",
+"object_type : ELLIPSE",
+"object_type : ARC",
+"object_type : LINE",
+"object_type : ARROW",
+"object_type : SPLINE",
+"object_type : '[' ']'",
+"object_type : TEXT",
+"label_path : '.' LABEL",
+"label_path : label_path '.' LABEL",
+"relative_path : corner",
+"relative_path : label_path",
+"relative_path : label_path corner",
+"path : relative_path",
+"path : '(' relative_path ',' relative_path ')'",
+"path : ORDINAL LAST object_type relative_path",
+"path : LAST object_type relative_path",
+"path : ORDINAL object_type relative_path",
+"path : LABEL relative_path",
+"corner : DOT_N",
+"corner : DOT_E",
+"corner : DOT_W",
+"corner : DOT_S",
+"corner : DOT_NE",
+"corner : DOT_SE",
+"corner : DOT_NW",
+"corner : DOT_SW",
+"corner : DOT_C",
+"corner : DOT_START",
+"corner : DOT_END",
+"corner : TOP",
+"corner : BOTTOM",
+"corner : LEFT",
+"corner : RIGHT",
+"corner : UPPER LEFT",
+"corner : LOWER LEFT",
+"corner : UPPER RIGHT",
+"corner : LOWER RIGHT",
+"corner : LEFT_CORNER",
+"corner : RIGHT_CORNER",
+"corner : UPPER LEFT_CORNER",
+"corner : LOWER LEFT_CORNER",
+"corner : UPPER RIGHT_CORNER",
+"corner : LOWER RIGHT_CORNER",
+"corner : CENTER",
+"corner : START",
+"corner : END",
+"expr : VARIABLE",
+"expr : NUMBER",
+"expr : place DOT_X",
+"expr : place DOT_Y",
+"expr : place DOT_HT",
+"expr : place DOT_WID",
+"expr : place DOT_RAD",
+"expr : expr '+' expr",
+"expr : expr '-' expr",
+"expr : expr '*' expr",
+"expr : expr '/' expr",
+"expr : expr '%' expr",
+"expr : expr '^' expr",
+"expr : '-' expr",
+"expr : '(' any_expr ')'",
+"expr : SIN '(' any_expr ')'",
+"expr : COS '(' any_expr ')'",
+"expr : ATAN2 '(' any_expr ',' any_expr ')'",
+"expr : LOG '(' any_expr ')'",
+"expr : EXP '(' any_expr ')'",
+"expr : SQRT '(' any_expr ')'",
+"expr : K_MAX '(' any_expr ',' any_expr ')'",
+"expr : K_MIN '(' any_expr ',' any_expr ')'",
+"expr : INT '(' any_expr ')'",
+"expr : RAND '(' any_expr ')'",
+"expr : RAND '(' ')'",
+"expr : expr '<' expr",
+"expr : expr LESSEQUAL expr",
+"expr : expr '>' expr",
+"expr : expr GREATEREQUAL expr",
+"expr : expr EQUALEQUAL expr",
+"expr : expr NOTEQUAL expr",
+"expr : expr ANDAND expr",
+"expr : expr OROR expr",
+"expr : '!' expr",
+};
+#endif
+#define YYLEX yylex()
+#define YYEMPTY -1
+#define yyclearin (yychar=(YYEMPTY))
+#define yyerrok (yyerrflag=0)
+#ifndef YYINITDEPTH
+#define YYINITDEPTH 200
+#endif
+#ifdef YYSTACKSIZE
+#undef YYMAXDEPTH
+#define YYMAXDEPTH YYSTACKSIZE
+#else
+#ifdef YYMAXDEPTH
+#define YYSTACKSIZE YYMAXDEPTH
+#else
+#define YYSTACKSIZE 10000
+#define YYMAXDEPTH 10000
+#endif
+#endif
+int yydebug;
+int yynerrs;
+int yyerrflag;
+int yychar;
+YYSTYPE yyval;
+YYSTYPE yylval;
+static short *yyss;
+static YYSTYPE *yyvs;
+static int yystacksize;
+static int yygrow ();
+static YYPTR yymalloc YYPARAMS((unsigned));
+static YYPTR yyrealloc YYPARAMS((YYPTR, unsigned));
+#define yyfree(x) free(x)
+#line 1529 "pic.y"
+
+/* bison defines const to be empty unless __STDC__ is defined, which it
+isn't under cfront */
+
+#ifdef const
+#undef const
+#endif
+
+static struct {
+  const char *name;
+  double val;
+  int scaled;		     // non-zero if val should be multiplied by scale
+} defaults_table[] = {
+  { "arcrad", .25, 1 },
+  { "arrowht", .1, 1 },
+  { "arrowwid", .05, 1 },
+  { "circlerad", .25, 1 },
+  { "boxht", .5, 1 },
+  { "boxwid", .75, 1 },
+  { "boxrad", 0.0, 1 },
+  { "dashwid", .05, 1 },
+  { "ellipseht", .5, 1 },
+  { "ellipsewid", .75, 1 },
+  { "moveht", .5, 1 },
+  { "movewid", .5, 1 },
+  { "lineht", .5, 1 },
+  { "linewid", .5, 1 },
+  { "textht", 0.0, 1 },
+  { "textwid", 0.0, 1 },
+  { "scale", 1.0, 0 },
+  { "linethick", -1.0, 0 },		// in points
+  { "fillval", .5, 0 },
+  { "arrowhead", 1.0, 0 },
+  { "maxpswid", 8.5, 0 },
+  { "maxpsht", 11.0, 0 },
+};
+
+place *lookup_label(const char *label)
+{
+  saved_state *state = current_saved_state;
+  PTABLE(place) *tbl = current_table;
+  for (;;) {
+    place *pl = tbl->lookup(label);
+    if (pl)
+      return pl;
+    if (!state)
+      return 0;
+    tbl = state->tbl;
+    state = state->prev;
+  }
+}
+
+void define_label(const char *label, const place *pl)
+{
+  place *p = new place;
+  *p = *pl;
+  current_table->define(label, p);
+}
+
+int lookup_variable(const char *name, double *val)
+{
+  place *pl = lookup_label(name);
+  if (pl) {
+    *val = pl->x;
+    return 1;
+  }
+  return 0;
+}
+
+void define_variable(const char *name, double val)
+{
+  place *p = new place;
+  p->obj = 0;
+  p->x = val;
+  p->y = 0.0;
+  current_table->define(name, p);
+  if (strcmp(name, "scale") == 0) {
+    // When the scale changes, reset all scaled pre-defined variables to
+    // their default values.
+    for (int i = 0; i < sizeof(defaults_table)/sizeof(defaults_table[0]); i++) 
+      if (defaults_table[i].scaled)
+	define_variable(defaults_table[i].name, val*defaults_table[i].val);
+  }
+}
+
+// called once only (not once per parse)
+
+void parse_init()
+{
+  current_direction = RIGHT_DIRECTION;
+  current_position.x = 0.0;
+  current_position.y = 0.0;
+  // This resets everything to its default value.
+  reset_all();
+}
+
+void reset(const char *nm)
+{
+  for (int i = 0; i < sizeof(defaults_table)/sizeof(defaults_table[0]); i++)
+    if (strcmp(nm, defaults_table[i].name) == 0) {
+      double val = defaults_table[i].val;
+      if (defaults_table[i].scaled) {
+	double scale;
+	lookup_variable("scale", &scale);
+	val *= scale;
+      }
+      define_variable(defaults_table[i].name, val);
+      return;
+    }
+  lex_error("`%1' is not a predefined variable", nm);
+}
+
+void reset_all()
+{
+  // We only have to explicitly reset the pre-defined variables that
+  // aren't scaled because `scale' is not scaled, and changing the
+  // value of `scale' will reset all the pre-defined variables that
+  // are scaled.
+  for (int i = 0; i < sizeof(defaults_table)/sizeof(defaults_table[0]); i++)
+    if (!defaults_table[i].scaled)
+      define_variable(defaults_table[i].name, defaults_table[i].val);
+}
+
+// called after each parse
+
+void parse_cleanup()
+{
+  while (current_saved_state != 0) {
+    delete current_table;
+    current_table = current_saved_state->tbl;
+    saved_state *tem = current_saved_state;
+    current_saved_state = current_saved_state->prev;
+    delete tem;
+  }
+  assert(current_table == &top_table);
+  PTABLE_ITERATOR(place) iter(current_table);
+  const char *key;
+  place *pl;
+  while (iter.next(&key, &pl))
+    if (pl->obj != 0) {
+      position pos = pl->obj->origin();
+      pl->obj = 0;
+      pl->x = pos.x;
+      pl->y = pos.y;
+    }
+  while (olist.head != 0) {
+    object *tem = olist.head;
+    olist.head = olist.head->next;
+    delete tem;
+  }
+  olist.tail = 0;
+  current_direction = RIGHT_DIRECTION;
+  current_position.x = 0.0;
+  current_position.y = 0.0;
+}
+
+const char *ordinal_postfix(int n)
+{
+  if (n < 10 || n > 20)
+    switch (n % 10) {
+    case 1:
+      return "st";
+    case 2:
+      return "nd";
+    case 3:
+      return "rd";
+    }
+  return "th";
+}
+
+const char *object_type_name(object_type type)
+{
+  switch (type) {
+  case BOX_OBJECT:
+    return "box";
+  case CIRCLE_OBJECT:
+    return "circle";
+  case ELLIPSE_OBJECT:
+    return "ellipse";
+  case ARC_OBJECT:
+    return "arc";
+  case SPLINE_OBJECT:
+    return "spline";
+  case LINE_OBJECT:
+    return "line";
+  case ARROW_OBJECT:
+    return "arrow";
+  case MOVE_OBJECT:
+    return "move";
+  case TEXT_OBJECT:
+    return "\"\"";
+  case BLOCK_OBJECT:
+    return "[]";
+  case OTHER_OBJECT:
+  case MARK_OBJECT:
+  default:
+    break;
+  }
+  return "object";
+}
+
+static char sprintf_buf[1024];
+
+char *format_number(const char *form, double n)
+{
+  if (form == 0)
+    form = "%g";
+  else {
+    // this is a fairly feeble attempt at validation of the format
+    int nspecs = 0;
+    for (const char *p = form; *p != '\0'; p++)
+      if (*p == '%') {
+	if (p[1] == '%')
+	  p++;
+	else
+	  nspecs++;
+      }
+    if (nspecs > 1) {
+      lex_error("bad format `%1'", form);
+      return strsave(form);
+    }
+  }
+  sprintf(sprintf_buf, form, n);
+  return strsave(sprintf_buf);
+}
+
+char *do_sprintf(const char *form, const double *v, int nv)
+{
+  string result;
+  int i = 0;
+  string one_format;
+  while (*form) {
+    if (*form == '%') {
+      one_format += *form++;
+      for (; *form != '\0' && strchr("#-+ 0123456789.", *form) != 0; form++)
+	one_format += *form;
+      if (*form == '\0' || strchr("eEfgG%", *form) == 0) {
+	lex_error("bad sprintf format");
+	result += one_format;
+	result += form;
+	break;
+      }
+      if (*form == '%') {
+	one_format += *form++;
+	one_format += '\0';
+	sprintf(sprintf_buf, one_format.contents());
+      }
+      else {
+	if (i >= nv) {
+	  lex_error("too few arguments to sprintf");
+	  result += one_format;
+	  result += form;
+	  break;
+	}
+	one_format += *form++;
+	one_format += '\0';
+	sprintf(sprintf_buf, one_format.contents(), v[i++]);
+      }
+      one_format.clear();
+      result += sprintf_buf;
+    }
+    else
+      result += *form++;
+  }
+  result += '\0';
+  return strsave(result.contents());
+}
+#line 3397 "y.tab.c"
+#define YYABORT goto yyabort
+#define YYACCEPT goto yyaccept
+#define YYERROR goto yyerrlab
+
+#if YYDEBUG
+#ifdef __cplusplus
+extern "C" char *getenv();
+#else
+extern char *getenv();
+#endif
+#endif
+
+int
+yyparse()
+{
+    register int yym, yyn, yystate;
+    register YYSTYPE *yyvsp;
+    register short *yyssp;
+    short *yysse;
+#if YYDEBUG
+    register YYCONST char *yys;
+
+    if (yys = getenv("YYDEBUG"))
+    {
+        yyn = *yys;
+        if (yyn >= '0' && yyn <= '9')
+            yydebug = yyn - '0';
+    }
+#endif
+
+    yynerrs = 0;
+    yyerrflag = 0;
+    yychar = (-1);
+
+    if (yyss == 0)
+    {
+        yyss = (short *) yymalloc (YYINITDEPTH * sizeof (short));
+        if (yyss == 0)
+          goto yyabort;
+        yyvs = (YYSTYPE *) yymalloc (YYINITDEPTH * sizeof (YYSTYPE));
+        if (yyvs == 0)
+        {
+            yyfree (yyss);
+            goto yyabort;
+        }
+        yystacksize = YYINITDEPTH;
+    }
+    yysse = yyss + yystacksize - 1;
+    yyssp = yyss;
+    yyvsp = yyvs;
+    *yyssp = yystate = 0;
+
+yyloop:
+    if (yyn = yydefred[yystate]) goto yyreduce;
+    if (yychar < 0)
+    {
+        if ((yychar = yylex()) < 0) yychar = 0;
+#if YYDEBUG
+        if (yydebug)
+        {
+            yys = 0;
+            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
+            if (!yys) yys = "illegal-symbol";
+            printf("yydebug: state %d, reading %d (%s)\n", yystate,
+                    yychar, yys);
+        }
+#endif
+    }
+    if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&
+            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
+    {
+#if YYDEBUG
+        if (yydebug)
+            printf("yydebug: state %d, shifting to state %d\n",
+                    yystate, yytable[yyn]);
+#endif
+        if (yyssp >= yysse)
+        {
+            /* FIXME: Rework so there's only one of these.  */
+            int depth = yyssp - yyss;
+            if (yygrow () != 0)
+              goto yyoverflow;
+            yysse = yyss + yystacksize - 1;
+            yyssp = yyss + depth;
+            yyvsp = yyvs + depth;
+        }
+        *++yyssp = yystate = yytable[yyn];
+        *++yyvsp = yylval;
+        yychar = (-1);
+        if (yyerrflag > 0)  --yyerrflag;
+        goto yyloop;
+    }
+    if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&
+            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
+    {
+        yyn = yytable[yyn];
+        goto yyreduce;
+    }
+    if (yyerrflag) goto yyinrecovery;
+#ifdef lint
+    goto yynewerror;
+#endif
+yynewerror:
+    yyerror("syntax error");
+#ifdef lint
+    goto yyerrlab;
+#endif
+yyerrlab:
+    ++yynerrs;
+yyinrecovery:
+    if (yyerrflag < 3)
+    {
+        yyerrflag = 3;
+        for (;;)
+        {
+            if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 &&
+                    yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)
+            {
+#if YYDEBUG
+                if (yydebug)
+                    printf("yydebug: state %d, error recovery shifting\
+ to state %d\n", *yyssp, yytable[yyn]);
+#endif
+                if (yyssp >= yysse)
+                {
+                    int depth = yyssp - yyss;
+                    if (yygrow () != 0)
+                      goto yyoverflow;
+                    yysse = yyss + yystacksize - 1;
+                    yyssp = yyss + depth;
+                    yyvsp = yyvs + depth;
+                }
+                *++yyssp = yystate = yytable[yyn];
+                *++yyvsp = yylval;
+                goto yyloop;
+            }
+            else
+            {
+#if YYDEBUG
+                if (yydebug)
+                    printf("yydebug: error recovery discarding state %d\n",
+                            *yyssp);
+#endif
+                if (yyssp <= yyss) goto yyabort;
+                --yyssp;
+                --yyvsp;
+            }
+        }
+    }
+    else
+    {
+        if (yychar == 0) goto yyabort;
+#if YYDEBUG
+        if (yydebug)
+        {
+            yys = 0;
+            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
+            if (!yys) yys = "illegal-symbol";
+            printf("yydebug: state %d, error recovery discards token %d (%s)\n",
+                    yystate, yychar, yys);
+        }
+#endif
+        yychar = (-1);
+        goto yyloop;
+    }
+yyreduce:
+#if YYDEBUG
+    if (yydebug)
+        printf("yydebug: state %d, reducing by rule %d (%s)\n",
+                yystate, yyn, yyrule[yyn]);
+#endif
+    yym = yylen[yyn];
+    yyval = yyvsp[1-yym];
+    switch (yyn)
+    {
+case 2:
+#line 272 "pic.y"
+{
+		  if (olist.head)
+		    print_picture(olist.head);
+		}
+break;
+case 3:
+#line 281 "pic.y"
+{ yyval.pl = yyvsp[-1].pl; }
+break;
+case 4:
+#line 286 "pic.y"
+{ yyval.pl = yyvsp[0].pl; }
+break;
+case 5:
+#line 288 "pic.y"
+{ yyval.pl = yyvsp[-2].pl; }
+break;
+case 10:
+#line 303 "pic.y"
+{
+		  define_variable(yyvsp[-2].str, yyvsp[0].x);
+		  a_delete yyvsp[-2].str;
+		}
+break;
+case 11:
+#line 308 "pic.y"
+{
+		  place *p = lookup_label(yyvsp[-3].str);
+		  if (!p) {
+		    lex_error("variable `%1' not defined", yyvsp[-3].str);
+		    YYABORT;
+		  }
+		  p->obj = 0;
+		  p->x = yyvsp[0].x;
+		  p->y = 0.0;
+		  a_delete yyvsp[-3].str;
+		}
+break;
+case 12:
+#line 320 "pic.y"
+{ current_direction = UP_DIRECTION; }
+break;
+case 13:
+#line 322 "pic.y"
+{ current_direction = DOWN_DIRECTION; }
+break;
+case 14:
+#line 324 "pic.y"
+{ current_direction = LEFT_DIRECTION; }
+break;
+case 15:
+#line 326 "pic.y"
+{ current_direction = RIGHT_DIRECTION; }
+break;
+case 16:
+#line 328 "pic.y"
+{
+		  olist.append(make_command_object(yyvsp[0].lstr.str, yyvsp[0].lstr.filename,
+						   yyvsp[0].lstr.lineno));
+		}
+break;
+case 17:
+#line 333 "pic.y"
+{
+		  olist.append(make_command_object(yyvsp[0].lstr.str, yyvsp[0].lstr.filename,
+						   yyvsp[0].lstr.lineno));
+		}
+break;
+case 18:
+#line 338 "pic.y"
+{
+		  fprintf(stderr, "%s\n", yyvsp[0].lstr.str);
+		  a_delete yyvsp[0].lstr.str;
+	          fflush(stderr);
+		}
+break;
+case 19:
+#line 344 "pic.y"
+{ delim_flag = 1; }
+break;
+case 20:
+#line 346 "pic.y"
+{
+		  delim_flag = 0;
+		  if (safer_flag)
+		    lex_error("unsafe to run command `%1'", yyvsp[0].str);
+		  else
+		    system(yyvsp[0].str);
+		  a_delete yyvsp[0].str;
+		}
+break;
+case 21:
+#line 355 "pic.y"
+{
+		  if (yychar < 0)
+		    do_lookahead();
+		  do_copy(yyvsp[0].lstr.str);
+		  /* do not delete the filename*/
+		}
+break;
+case 22:
+#line 362 "pic.y"
+{ delim_flag = 2; }
+break;
+case 23:
+#line 364 "pic.y"
+{ delim_flag = 0; }
+break;
+case 24:
+#line 366 "pic.y"
+{
+		  if (yychar < 0)
+		    do_lookahead();
+		  copy_file_thru(yyvsp[-5].lstr.str, yyvsp[-2].str, yyvsp[0].str);
+		  /* do not delete the filename*/
+		  a_delete yyvsp[-2].str;
+		  a_delete yyvsp[0].str;
+		}
+break;
+case 25:
+#line 375 "pic.y"
+{ delim_flag = 2; }
+break;
+case 26:
+#line 377 "pic.y"
+{ delim_flag = 0; }
+break;
+case 27:
+#line 379 "pic.y"
+{
+		  if (yychar < 0)
+		    do_lookahead();
+		  copy_rest_thru(yyvsp[-2].str, yyvsp[0].str);
+		  a_delete yyvsp[-2].str;
+		  a_delete yyvsp[0].str;
+		}
+break;
+case 28:
+#line 387 "pic.y"
+{ delim_flag = 1; }
+break;
+case 29:
+#line 389 "pic.y"
+{
+		  delim_flag = 0;
+		  if (yychar < 0)
+		    do_lookahead();
+		  do_for(yyvsp[-8].str, yyvsp[-6].x, yyvsp[-4].x, yyvsp[-3].by.is_multiplicative, yyvsp[-3].by.val, yyvsp[0].str); 
+		}
+break;
+case 30:
+#line 396 "pic.y"
+{
+		  if (yychar < 0)
+		    do_lookahead();
+		  if (yyvsp[0].if_data.x != 0.0)
+		    push_body(yyvsp[0].if_data.body);
+		  a_delete yyvsp[0].if_data.body;
+		}
+break;
+case 31:
+#line 404 "pic.y"
+{ delim_flag = 1; }
+break;
+case 32:
+#line 406 "pic.y"
+{
+		  delim_flag = 0;
+		  if (yychar < 0)
+		    do_lookahead();
+		  if (yyvsp[-3].if_data.x != 0.0)
+		    push_body(yyvsp[-3].if_data.body);
+		  else
+		    push_body(yyvsp[0].str);
+		  a_delete yyvsp[-3].if_data.body;
+		  a_delete yyvsp[0].str;
+		}
+break;
+case 34:
+#line 419 "pic.y"
+{ define_variable("scale", 1.0); }
+break;
+case 35:
+#line 424 "pic.y"
+{ reset(yyvsp[0].str); a_delete yyvsp[0].str; }
+break;
+case 36:
+#line 426 "pic.y"
+{ reset(yyvsp[0].str); a_delete yyvsp[0].str; }
+break;
+case 37:
+#line 428 "pic.y"
+{ reset(yyvsp[0].str); a_delete yyvsp[0].str; }
+break;
+case 38:
+#line 433 "pic.y"
+{ yyval.lstr = yyvsp[0].lstr; }
+break;
+case 39:
+#line 435 "pic.y"
+{
+		  yyval.lstr.str = new char[strlen(yyvsp[-1].lstr.str) + strlen(yyvsp[0].lstr.str) + 1];
+		  strcpy(yyval.lstr.str, yyvsp[-1].lstr.str);
+		  strcat(yyval.lstr.str, yyvsp[0].lstr.str);
+		  a_delete yyvsp[-1].lstr.str;
+		  a_delete yyvsp[0].lstr.str;
+		  if (yyvsp[-1].lstr.filename) {
+		    yyval.lstr.filename = yyvsp[-1].lstr.filename;
+		    yyval.lstr.lineno = yyvsp[-1].lstr.lineno;
+		  }
+		  else if (yyvsp[0].lstr.filename) {
+		    yyval.lstr.filename = yyvsp[0].lstr.filename;
+		    yyval.lstr.lineno = yyvsp[0].lstr.lineno;
+		  }
+		}
+break;
+case 40:
+#line 454 "pic.y"
+{
+		  yyval.lstr.str = new char[GDIGITS + 1];
+		  sprintf(yyval.lstr.str, "%g", yyvsp[0].x);
+		  yyval.lstr.filename = 0;
+		  yyval.lstr.lineno = 0;
+		}
+break;
+case 41:
+#line 461 "pic.y"
+{ yyval.lstr = yyvsp[0].lstr; }
+break;
+case 42:
+#line 463 "pic.y"
+{
+		  yyval.lstr.str = new char[GDIGITS + 2 + GDIGITS + 1];
+		  sprintf(yyval.lstr.str, "%g, %g", yyvsp[0].pair.x, yyvsp[0].pair.y);
+		  yyval.lstr.filename = 0;
+		  yyval.lstr.lineno = 0;
+		}
+break;
+case 43:
+#line 472 "pic.y"
+{ delim_flag = 1; }
+break;
+case 44:
+#line 474 "pic.y"
+{ delim_flag = 0; yyval.if_data.x = yyvsp[-3].x; yyval.if_data.body = yyvsp[0].str; }
+break;
+case 45:
+#line 479 "pic.y"
+{ yyval.str = 0; }
+break;
+case 46:
+#line 481 "pic.y"
+{ yyval.str = yyvsp[0].lstr.str; }
+break;
+case 47:
+#line 486 "pic.y"
+{ yyval.x = yyvsp[0].x; }
+break;
+case 48:
+#line 488 "pic.y"
+{ yyval.x = yyvsp[0].x; }
+break;
+case 49:
+#line 493 "pic.y"
+{
+		  yyval.x = strcmp(yyvsp[-2].lstr.str, yyvsp[0].lstr.str) == 0;
+		  a_delete yyvsp[-2].lstr.str;
+		  a_delete yyvsp[0].lstr.str;
+		}
+break;
+case 50:
+#line 499 "pic.y"
+{
+		  yyval.x = strcmp(yyvsp[-2].lstr.str, yyvsp[0].lstr.str) != 0;
+		  a_delete yyvsp[-2].lstr.str;
+		  a_delete yyvsp[0].lstr.str;
+		}
+break;
+case 51:
+#line 505 "pic.y"
+{ yyval.x = (yyvsp[-2].x != 0.0 && yyvsp[0].x != 0.0); }
+break;
+case 52:
+#line 507 "pic.y"
+{ yyval.x = (yyvsp[-2].x != 0.0 && yyvsp[0].x != 0.0); }
+break;
+case 53:
+#line 509 "pic.y"
+{ yyval.x = (yyvsp[-2].x != 0.0 && yyvsp[0].x != 0.0); }
+break;
+case 54:
+#line 511 "pic.y"
+{ yyval.x = (yyvsp[-2].x != 0.0 || yyvsp[0].x != 0.0); }
+break;
+case 55:
+#line 513 "pic.y"
+{ yyval.x = (yyvsp[-2].x != 0.0 || yyvsp[0].x != 0.0); }
+break;
+case 56:
+#line 515 "pic.y"
+{ yyval.x = (yyvsp[-2].x != 0.0 || yyvsp[0].x != 0.0); }
+break;
+case 57:
+#line 517 "pic.y"
+{ yyval.x = (yyvsp[0].x == 0.0); }
+break;
+case 58:
+#line 523 "pic.y"
+{ yyval.by.val = 1.0; yyval.by.is_multiplicative = 0; }
+break;
+case 59:
+#line 525 "pic.y"
+{ yyval.by.val = yyvsp[0].x; yyval.by.is_multiplicative = 0; }
+break;
+case 60:
+#line 527 "pic.y"
+{ yyval.by.val = yyvsp[0].x; yyval.by.is_multiplicative = 1; }
+break;
+case 61:
+#line 532 "pic.y"
+{
+		  yyval.pl.obj = yyvsp[0].spec->make_object(&current_position,
+					   &current_direction);
+		  if (yyval.pl.obj == 0)
+		    YYABORT;
+		  delete yyvsp[0].spec;
+		  if (yyval.pl.obj)
+		    olist.append(yyval.pl.obj);
+		  else {
+		    yyval.pl.x = current_position.x;
+		    yyval.pl.y = current_position.y;
+		  }
+		}
+break;
+case 62:
+#line 546 "pic.y"
+{ yyval.pl = yyvsp[0].pl; define_label(yyvsp[-3].str, & yyval.pl); a_delete yyvsp[-3].str; }
+break;
+case 63:
+#line 548 "pic.y"
+{
+		  yyval.pl.obj = 0;
+		  yyval.pl.x = yyvsp[0].pair.x;
+		  yyval.pl.y = yyvsp[0].pair.y;
+		  define_label(yyvsp[-3].str, & yyval.pl);
+		  a_delete yyvsp[-3].str;
+		}
+break;
+case 64:
+#line 556 "pic.y"
+{
+		  yyval.pl = yyvsp[0].pl;
+		  define_label(yyvsp[-3].str, & yyval.pl);
+		  a_delete yyvsp[-3].str;
+		}
+break;
+case 65:
+#line 562 "pic.y"
+{
+		  yyval.state.x = current_position.x;
+		  yyval.state.y = current_position.y;
+		  yyval.state.dir = current_direction;
+		}
+break;
+case 66:
+#line 568 "pic.y"
+{
+		  current_position.x = yyvsp[-2].state.x;
+		  current_position.y = yyvsp[-2].state.y;
+		  current_direction = yyvsp[-2].state.dir;
+		}
+break;
+case 67:
+#line 574 "pic.y"
+{
+		  yyval.pl = yyvsp[-3].pl;
+		}
+break;
+case 68:
+#line 578 "pic.y"
+{
+		  yyval.pl.obj = 0;
+		  yyval.pl.x = current_position.x;
+		  yyval.pl.y = current_position.y;
+		}
+break;
+case 69:
+#line 587 "pic.y"
+{}
+break;
+case 70:
+#line 589 "pic.y"
+{}
+break;
+case 71:
+#line 594 "pic.y"
+{
+		  yyval.spec = new object_spec(BOX_OBJECT);
+		}
+break;
+case 72:
+#line 598 "pic.y"
+{
+		  yyval.spec = new object_spec(CIRCLE_OBJECT);
+		}
+break;
+case 73:
+#line 602 "pic.y"
+{
+		  yyval.spec = new object_spec(ELLIPSE_OBJECT);
+		}
+break;
+case 74:
+#line 606 "pic.y"
+{
+		  yyval.spec = new object_spec(ARC_OBJECT);
+		  yyval.spec->dir = current_direction;
+		}
+break;
+case 75:
+#line 611 "pic.y"
+{
+		  yyval.spec = new object_spec(LINE_OBJECT);
+		  lookup_variable("lineht", & yyval.spec->segment_height);
+		  lookup_variable("linewid", & yyval.spec->segment_width);
+		  yyval.spec->dir = current_direction;
+		}
+break;
+case 76:
+#line 618 "pic.y"
+{
+		  yyval.spec = new object_spec(ARROW_OBJECT);
+		  lookup_variable("lineht", & yyval.spec->segment_height);
+		  lookup_variable("linewid", & yyval.spec->segment_width);
+		  yyval.spec->dir = current_direction;
+		}
+break;
+case 77:
+#line 625 "pic.y"
+{
+		  yyval.spec = new object_spec(MOVE_OBJECT);
+		  lookup_variable("moveht", & yyval.spec->segment_height);
+		  lookup_variable("movewid", & yyval.spec->segment_width);
+		  yyval.spec->dir = current_direction;
+		}
+break;
+case 78:
+#line 632 "pic.y"
+{
+		  yyval.spec = new object_spec(SPLINE_OBJECT);
+		  lookup_variable("lineht", & yyval.spec->segment_height);
+		  lookup_variable("linewid", & yyval.spec->segment_width);
+		  yyval.spec->dir = current_direction;
+		}
+break;
+case 79:
+#line 639 "pic.y"
+{
+		  yyval.spec = new object_spec(TEXT_OBJECT);
+		  yyval.spec->text = new text_item(yyvsp[0].lstr.str, yyvsp[0].lstr.filename, yyvsp[0].lstr.lineno);
+		}
+break;
+case 80:
+#line 644 "pic.y"
+{
+		  yyval.spec = new object_spec(TEXT_OBJECT);
+		  yyval.spec->text = new text_item(format_number(0, yyvsp[0].x), 0, -1);
+		}
+break;
+case 81:
+#line 649 "pic.y"
+{
+		  yyval.spec = new object_spec(TEXT_OBJECT);
+		  yyval.spec->text = new text_item(format_number(yyvsp[0].lstr.str, yyvsp[-1].x),
+					   yyvsp[0].lstr.filename, yyvsp[0].lstr.lineno);
+		  a_delete yyvsp[0].lstr.str;
+		}
+break;
+case 82:
+#line 656 "pic.y"
+{
+		  saved_state *p = new saved_state;
+		  yyval.pstate = p;
+		  p->x = current_position.x;
+		  p->y = current_position.y;
+		  p->dir = current_direction;
+		  p->tbl = current_table;
+		  p->prev = current_saved_state;
+		  current_position.x = 0.0;
+		  current_position.y = 0.0;
+		  current_table = new PTABLE(place);
+		  current_saved_state = p;
+		  olist.append(make_mark_object());
+		}
+break;
+case 83:
+#line 671 "pic.y"
+{
+		  current_position.x = yyvsp[-2].pstate->x;
+		  current_position.y = yyvsp[-2].pstate->y;
+		  current_direction = yyvsp[-2].pstate->dir;
+		  yyval.spec = new object_spec(BLOCK_OBJECT);
+		  olist.wrap_up_block(& yyval.spec->oblist);
+		  yyval.spec->tbl = current_table;
+		  current_table = yyvsp[-2].pstate->tbl;
+		  current_saved_state = yyvsp[-2].pstate->prev;
+		  delete yyvsp[-2].pstate;
+		}
+break;
+case 84:
+#line 683 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->height = yyvsp[0].x;
+		  yyval.spec->flags |= HAS_HEIGHT;
+		}
+break;
+case 85:
+#line 689 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->radius = yyvsp[0].x;
+		  yyval.spec->flags |= HAS_RADIUS;
+		}
+break;
+case 86:
+#line 695 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->width = yyvsp[0].x;
+		  yyval.spec->flags |= HAS_WIDTH;
+		}
+break;
+case 87:
+#line 701 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->radius = yyvsp[0].x/2.0;
+		  yyval.spec->flags |= HAS_RADIUS;
+		}
+break;
+case 88:
+#line 707 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  switch (yyval.spec->dir) {
+		  case UP_DIRECTION:
+		    yyval.spec->segment_pos.y += yyvsp[0].x;
+		    break;
+		  case DOWN_DIRECTION:
+		    yyval.spec->segment_pos.y -= yyvsp[0].x;
+		    break;
+		  case RIGHT_DIRECTION:
+		    yyval.spec->segment_pos.x += yyvsp[0].x;
+		    break;
+		  case LEFT_DIRECTION:
+		    yyval.spec->segment_pos.x -= yyvsp[0].x;
+		    break;
+		  }
+		}
+break;
+case 89:
+#line 726 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->dir = UP_DIRECTION;
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  yyval.spec->segment_pos.y += yyval.spec->segment_height;
+		}
+break;
+case 90:
+#line 733 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->dir = UP_DIRECTION;
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  yyval.spec->segment_pos.y += yyvsp[0].x;
+		}
+break;
+case 91:
+#line 740 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->dir = DOWN_DIRECTION;
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  yyval.spec->segment_pos.y -= yyval.spec->segment_height;
+		}
+break;
+case 92:
+#line 747 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->dir = DOWN_DIRECTION;
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  yyval.spec->segment_pos.y -= yyvsp[0].x;
+		}
+break;
+case 93:
+#line 754 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->dir = RIGHT_DIRECTION;
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  yyval.spec->segment_pos.x += yyval.spec->segment_width;
+		}
+break;
+case 94:
+#line 761 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->dir = RIGHT_DIRECTION;
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  yyval.spec->segment_pos.x += yyvsp[0].x;
+		}
+break;
+case 95:
+#line 768 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->dir = LEFT_DIRECTION;
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  yyval.spec->segment_pos.x -= yyval.spec->segment_width;
+		}
+break;
+case 96:
+#line 775 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->dir = LEFT_DIRECTION;
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  yyval.spec->segment_pos.x -= yyvsp[0].x;
+		}
+break;
+case 97:
+#line 782 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->flags |= HAS_FROM;
+		  yyval.spec->from.x = yyvsp[0].pair.x;
+		  yyval.spec->from.y = yyvsp[0].pair.y;
+		}
+break;
+case 98:
+#line 789 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  if (yyval.spec->flags & HAS_SEGMENT)
+		    yyval.spec->segment_list = new segment(yyval.spec->segment_pos,
+						   yyval.spec->segment_is_absolute,
+						   yyval.spec->segment_list);
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  yyval.spec->segment_pos.x = yyvsp[0].pair.x;
+		  yyval.spec->segment_pos.y = yyvsp[0].pair.y;
+		  yyval.spec->segment_is_absolute = 1;
+		  yyval.spec->flags |= HAS_TO;
+		  yyval.spec->to.x = yyvsp[0].pair.x;
+		  yyval.spec->to.y = yyvsp[0].pair.y;
+		}
+break;
+case 99:
+#line 804 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->flags |= HAS_AT;
+		  yyval.spec->at.x = yyvsp[0].pair.x;
+		  yyval.spec->at.y = yyvsp[0].pair.y;
+		  if (yyval.spec->type != ARC_OBJECT) {
+		    yyval.spec->flags |= HAS_FROM;
+		    yyval.spec->from.x = yyvsp[0].pair.x;
+		    yyval.spec->from.y = yyvsp[0].pair.y;
+		  }
+		}
+break;
+case 100:
+#line 816 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->flags |= HAS_WITH;
+		  yyval.spec->with = yyvsp[0].pth;
+		}
+break;
+case 101:
+#line 822 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->flags |= HAS_SEGMENT;
+		  yyval.spec->segment_pos.x += yyvsp[0].pair.x;
+		  yyval.spec->segment_pos.y += yyvsp[0].pair.y;
+		}
+break;
+case 102:
+#line 829 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  if (yyval.spec->flags & HAS_SEGMENT) {
+		    yyval.spec->segment_list = new segment(yyval.spec->segment_pos,
+						   yyval.spec->segment_is_absolute,
+						   yyval.spec->segment_list);
+		    yyval.spec->flags &= ~HAS_SEGMENT;
+		    yyval.spec->segment_pos.x = yyval.spec->segment_pos.y = 0.0;
+		    yyval.spec->segment_is_absolute = 0;
+		  }
+		}
+break;
+case 103:
+#line 841 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= IS_DOTTED;
+		  lookup_variable("dashwid", & yyval.spec->dash_width);
+		}
+break;
+case 104:
+#line 847 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->flags |= IS_DOTTED;
+		  yyval.spec->dash_width = yyvsp[0].x;
+		}
+break;
+case 105:
+#line 853 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= IS_DASHED;
+		  lookup_variable("dashwid", & yyval.spec->dash_width);
+		}
+break;
+case 106:
+#line 859 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->flags |= IS_DASHED;
+		  yyval.spec->dash_width = yyvsp[0].x;
+		}
+break;
+case 107:
+#line 865 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= IS_DEFAULT_FILLED;
+		}
+break;
+case 108:
+#line 870 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->flags |= IS_FILLED;
+		  yyval.spec->fill = yyvsp[0].x;
+		}
+break;
+case 109:
+#line 876 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  /* line chop chop means line chop 0 chop 0*/
+		  if (yyval.spec->flags & IS_DEFAULT_CHOPPED) {
+		    yyval.spec->flags |= IS_CHOPPED;
+		    yyval.spec->flags &= ~IS_DEFAULT_CHOPPED;
+		    yyval.spec->start_chop = yyval.spec->end_chop = 0.0;
+		  }
+		  else if (yyval.spec->flags & IS_CHOPPED) {
+		    yyval.spec->end_chop = 0.0;
+		  }
+		  else {
+		    yyval.spec->flags |= IS_DEFAULT_CHOPPED;
+		  }
+		}
+break;
+case 110:
+#line 892 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  if (yyval.spec->flags & IS_DEFAULT_CHOPPED) {
+		    yyval.spec->flags |= IS_CHOPPED;
+		    yyval.spec->flags &= ~IS_DEFAULT_CHOPPED;
+		    yyval.spec->start_chop = 0.0;
+		    yyval.spec->end_chop = yyvsp[0].x;
+		  }
+		  else if (yyval.spec->flags & IS_CHOPPED) {
+		    yyval.spec->end_chop = yyvsp[0].x;
+		  }
+		  else {
+		    yyval.spec->start_chop = yyval.spec->end_chop = yyvsp[0].x;
+		    yyval.spec->flags |= IS_CHOPPED;
+		  }
+		}
+break;
+case 111:
+#line 909 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= IS_SAME;
+		}
+break;
+case 112:
+#line 914 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= IS_INVISIBLE;
+		}
+break;
+case 113:
+#line 919 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= HAS_LEFT_ARROW_HEAD;
+		}
+break;
+case 114:
+#line 924 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= HAS_RIGHT_ARROW_HEAD;
+		}
+break;
+case 115:
+#line 929 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= (HAS_LEFT_ARROW_HEAD|HAS_RIGHT_ARROW_HEAD);
+		}
+break;
+case 116:
+#line 934 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= IS_CLOCKWISE;
+		}
+break;
+case 117:
+#line 939 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags &= ~IS_CLOCKWISE;
+		}
+break;
+case 118:
+#line 944 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  text_item **p;
+		  for (p = & yyval.spec->text; *p; p = &(*p)->next)
+		    ;
+		  *p = new text_item(yyvsp[0].lstr.str, yyvsp[0].lstr.filename, yyvsp[0].lstr.lineno);
+		}
+break;
+case 119:
+#line 952 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  if (yyval.spec->text) {
+		    text_item *p;
+		    for (p = yyval.spec->text; p->next; p = p->next)
+		      ;
+		    p->adj.h = LEFT_ADJUST;
+		  }
+		}
+break;
+case 120:
+#line 962 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  if (yyval.spec->text) {
+		    text_item *p;
+		    for (p = yyval.spec->text; p->next; p = p->next)
+		      ;
+		    p->adj.h = RIGHT_ADJUST;
+		  }
+		}
+break;
+case 121:
+#line 972 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  if (yyval.spec->text) {
+		    text_item *p;
+		    for (p = yyval.spec->text; p->next; p = p->next)
+		      ;
+		    p->adj.v = ABOVE_ADJUST;
+		  }
+		}
+break;
+case 122:
+#line 982 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  if (yyval.spec->text) {
+		    text_item *p;
+		    for (p = yyval.spec->text; p->next; p = p->next)
+		      ;
+		    p->adj.v = BELOW_ADJUST;
+		  }
+		}
+break;
+case 123:
+#line 992 "pic.y"
+{
+		  yyval.spec = yyvsp[-2].spec;
+		  yyval.spec->flags |= HAS_THICKNESS;
+		  yyval.spec->thickness = yyvsp[0].x;
+		}
+break;
+case 124:
+#line 998 "pic.y"
+{
+		  yyval.spec = yyvsp[-1].spec;
+		  yyval.spec->flags |= IS_ALIGNED;
+		}
+break;
+case 125:
+#line 1006 "pic.y"
+{
+		  yyval.lstr = yyvsp[0].lstr;
+		}
+break;
+case 126:
+#line 1010 "pic.y"
+{
+		  yyval.lstr.filename = yyvsp[-2].lstr.filename;
+		  yyval.lstr.lineno = yyvsp[-2].lstr.lineno;
+		  yyval.lstr.str = do_sprintf(yyvsp[-2].lstr.str, yyvsp[-1].dv.v, yyvsp[-1].dv.nv);
+		  a_delete yyvsp[-1].dv.v;
+		  a_delete yyvsp[-2].lstr.str;
+		}
+break;
+case 127:
+#line 1021 "pic.y"
+{
+		  yyval.dv.v = 0;
+		  yyval.dv.nv = 0;
+		  yyval.dv.maxv = 0;
+		}
+break;
+case 128:
+#line 1027 "pic.y"
+{
+		  yyval.dv = yyvsp[-2].dv;
+		  if (yyval.dv.nv >= yyval.dv.maxv) {
+		    if (yyval.dv.nv == 0) {
+		      yyval.dv.v = new double[4];
+		      yyval.dv.maxv = 4;
+		    }
+		    else {
+		      double *oldv = yyval.dv.v;
+		      yyval.dv.maxv *= 2;
+		      yyval.dv.v = new double[yyval.dv.maxv];
+		      memcpy(yyval.dv.v, oldv, yyval.dv.nv*sizeof(double));
+		      a_delete oldv;
+		    }
+		  }
+		  yyval.dv.v[yyval.dv.nv] = yyvsp[0].x;
+		  yyval.dv.nv += 1;
+		}
+break;
+case 129:
+#line 1049 "pic.y"
+{ yyval.pair = yyvsp[0].pair; }
+break;
+case 130:
+#line 1051 "pic.y"
+{
+		  position pos = yyvsp[0].pl;
+		  yyval.pair.x = pos.x;
+		  yyval.pair.y = pos.y;
+		}
+break;
+case 131:
+#line 1060 "pic.y"
+{ yyval.pair = yyvsp[0].pair; }
+break;
+case 132:
+#line 1062 "pic.y"
+{
+		  yyval.pair.x = yyvsp[-2].pair.x + yyvsp[0].pair.x;
+		  yyval.pair.y = yyvsp[-2].pair.y + yyvsp[0].pair.y;
+		}
+break;
+case 133:
+#line 1067 "pic.y"
+{
+		  yyval.pair.x = yyvsp[-2].pair.x - yyvsp[0].pair.x;
+		  yyval.pair.y = yyvsp[-2].pair.y - yyvsp[0].pair.y;
+		}
+break;
+case 134:
+#line 1072 "pic.y"
+{
+		  yyval.pair.x = yyvsp[-3].pair.x;
+		  yyval.pair.y = yyvsp[-1].pair.y;
+		}
+break;
+case 135:
+#line 1077 "pic.y"
+{
+		  yyval.pair.x = (1.0 - yyvsp[-4].x)*yyvsp[-2].pair.x + yyvsp[-4].x*yyvsp[0].pair.x;
+		  yyval.pair.y = (1.0 - yyvsp[-4].x)*yyvsp[-2].pair.y + yyvsp[-4].x*yyvsp[0].pair.y;
+		}
+break;
+case 136:
+#line 1082 "pic.y"
+{
+		  yyval.pair.x = (1.0 - yyvsp[-5].x)*yyvsp[-3].pair.x + yyvsp[-5].x*yyvsp[-1].pair.x;
+		  yyval.pair.y = (1.0 - yyvsp[-5].x)*yyvsp[-3].pair.y + yyvsp[-5].x*yyvsp[-1].pair.y;
+		}
+break;
+case 139:
+#line 1095 "pic.y"
+{ yyval.pair.x = yyvsp[-2].x; yyval.pair.y = yyvsp[0].x; }
+break;
+case 140:
+#line 1097 "pic.y"
+{ yyval.pair = yyvsp[-1].pair; }
+break;
+case 141:
+#line 1102 "pic.y"
+{ yyval.pl = yyvsp[0].pl; }
+break;
+case 142:
+#line 1104 "pic.y"
+{
+		  path pth(yyvsp[0].crn);
+		  if (!pth.follow(yyvsp[-1].pl, & yyval.pl))
+		    YYABORT;
+		}
+break;
+case 143:
+#line 1110 "pic.y"
+{
+		  path pth(yyvsp[-1].crn);
+		  if (!pth.follow(yyvsp[0].pl, & yyval.pl))
+		    YYABORT;
+		}
+break;
+case 144:
+#line 1116 "pic.y"
+{
+		  path pth(yyvsp[-2].crn);
+		  if (!pth.follow(yyvsp[0].pl, & yyval.pl))
+		    YYABORT;
+		}
+break;
+case 145:
+#line 1122 "pic.y"
+{
+		  yyval.pl.x = current_position.x;
+		  yyval.pl.y = current_position.y;
+		  yyval.pl.obj = 0;
+		}
+break;
+case 146:
+#line 1131 "pic.y"
+{
+		  place *p = lookup_label(yyvsp[0].str);
+		  if (!p) {
+		    lex_error("there is no place `%1'", yyvsp[0].str);
+		    YYABORT;
+		  }
+		  yyval.pl = *p;
+		  a_delete yyvsp[0].str;
+		}
+break;
+case 147:
+#line 1141 "pic.y"
+{
+		  yyval.pl.obj = yyvsp[0].obj;
+		}
+break;
+case 148:
+#line 1145 "pic.y"
+{
+		  path pth(yyvsp[0].str);
+		  if (!pth.follow(yyvsp[-2].pl, & yyval.pl))
+		    YYABORT;
+		}
+break;
+case 149:
+#line 1154 "pic.y"
+{ yyval.n = yyvsp[0].n; }
+break;
+case 150:
+#line 1156 "pic.y"
+{
+		  /* XXX Check for overflow (and non-integers?).*/
+		  yyval.n = (int)yyvsp[-1].x;
+		}
+break;
+case 151:
+#line 1164 "pic.y"
+{ yyval.n = 1; }
+break;
+case 152:
+#line 1166 "pic.y"
+{ yyval.n = yyvsp[-1].n; }
+break;
+case 153:
+#line 1171 "pic.y"
+{
+		  int count = 0;
+		  object *p;
+		  for (p = olist.head; p != 0; p = p->next)
+		    if (p->type() == yyvsp[0].obtype && ++count == yyvsp[-1].n) {
+		      yyval.obj = p;
+		      break;
+		    }
+		  if (p == 0) {
+		    lex_error("there is no %1%2 %3", yyvsp[-1].n, ordinal_postfix(yyvsp[-1].n),
+			      object_type_name(yyvsp[0].obtype));
+		    YYABORT;
+		  }
+		}
+break;
+case 154:
+#line 1186 "pic.y"
+{
+		  int count = 0;
+		  object *p;
+		  for (p = olist.tail; p != 0; p = p->prev)
+		    if (p->type() == yyvsp[0].obtype && ++count == yyvsp[-1].n) {
+		      yyval.obj = p;
+		      break;
+		    }
+		  if (p == 0) {
+		    lex_error("there is no %1%2 last %3", yyvsp[-1].n,
+			      ordinal_postfix(yyvsp[-1].n), object_type_name(yyvsp[0].obtype));
+		    YYABORT;
+		  }
+		}
+break;
+case 155:
+#line 1204 "pic.y"
+{ yyval.obtype = BOX_OBJECT; }
+break;
+case 156:
+#line 1206 "pic.y"
+{ yyval.obtype = CIRCLE_OBJECT; }
+break;
+case 157:
+#line 1208 "pic.y"
+{ yyval.obtype = ELLIPSE_OBJECT; }
+break;
+case 158:
+#line 1210 "pic.y"
+{ yyval.obtype = ARC_OBJECT; }
+break;
+case 159:
+#line 1212 "pic.y"
+{ yyval.obtype = LINE_OBJECT; }
+break;
+case 160:
+#line 1214 "pic.y"
+{ yyval.obtype = ARROW_OBJECT; }
+break;
+case 161:
+#line 1216 "pic.y"
+{ yyval.obtype = SPLINE_OBJECT; }
+break;
+case 162:
+#line 1218 "pic.y"
+{ yyval.obtype = BLOCK_OBJECT; }
+break;
+case 163:
+#line 1220 "pic.y"
+{ yyval.obtype = TEXT_OBJECT; }
+break;
+case 164:
+#line 1225 "pic.y"
+{
+		  yyval.pth = new path(yyvsp[0].str);
+		}
+break;
+case 165:
+#line 1229 "pic.y"
+{
+		  yyval.pth = yyvsp[-2].pth;
+		  yyval.pth->append(yyvsp[0].str);
+		}
+break;
+case 166:
+#line 1237 "pic.y"
+{
+		  yyval.pth = new path(yyvsp[0].crn);
+		}
+break;
+case 167:
+#line 1244 "pic.y"
+{
+		  yyval.pth = yyvsp[0].pth;
+		}
+break;
+case 168:
+#line 1248 "pic.y"
+{
+		  yyval.pth = yyvsp[-1].pth;
+		  yyval.pth->append(yyvsp[0].crn);
+		}
+break;
+case 169:
+#line 1256 "pic.y"
+{
+		  yyval.pth = yyvsp[0].pth;
+		}
+break;
+case 170:
+#line 1260 "pic.y"
+{
+		  yyval.pth = yyvsp[-3].pth;
+		  yyval.pth->set_ypath(yyvsp[-1].pth);
+		}
+break;
+case 171:
+#line 1266 "pic.y"
+{
+		  lex_warning("`%1%2 last %3' in `with' argument ignored",
+			      yyvsp[-3].n, ordinal_postfix(yyvsp[-3].n), object_type_name(yyvsp[-1].obtype));
+		  yyval.pth = yyvsp[0].pth;
+		}
+break;
+case 172:
+#line 1272 "pic.y"
+{
+		  lex_warning("`last %1' in `with' argument ignored",
+			      object_type_name(yyvsp[-1].obtype));
+		  yyval.pth = yyvsp[0].pth;
+		}
+break;
+case 173:
+#line 1278 "pic.y"
+{
+		  lex_warning("`%1%2 %3' in `with' argument ignored",
+			      yyvsp[-2].n, ordinal_postfix(yyvsp[-2].n), object_type_name(yyvsp[-1].obtype));
+		  yyval.pth = yyvsp[0].pth;
+		}
+break;
+case 174:
+#line 1284 "pic.y"
+{
+		  lex_warning("initial `%1' in `with' argument ignored", yyvsp[-1].str);
+		  a_delete yyvsp[-1].str;
+		  yyval.pth = yyvsp[0].pth;
+		}
+break;
+case 175:
+#line 1293 "pic.y"
+{ yyval.crn = &object::north; }
+break;
+case 176:
+#line 1295 "pic.y"
+{ yyval.crn = &object::east; }
+break;
+case 177:
+#line 1297 "pic.y"
+{ yyval.crn = &object::west; }
+break;
+case 178:
+#line 1299 "pic.y"
+{ yyval.crn = &object::south; }
+break;
+case 179:
+#line 1301 "pic.y"
+{ yyval.crn = &object::north_east; }
+break;
+case 180:
+#line 1303 "pic.y"
+{ yyval.crn = &object:: south_east; }
+break;
+case 181:
+#line 1305 "pic.y"
+{ yyval.crn = &object::north_west; }
+break;
+case 182:
+#line 1307 "pic.y"
+{ yyval.crn = &object::south_west; }
+break;
+case 183:
+#line 1309 "pic.y"
+{ yyval.crn = &object::center; }
+break;
+case 184:
+#line 1311 "pic.y"
+{ yyval.crn = &object::start; }
+break;
+case 185:
+#line 1313 "pic.y"
+{ yyval.crn = &object::end; }
+break;
+case 186:
+#line 1315 "pic.y"
+{ yyval.crn = &object::north; }
+break;
+case 187:
+#line 1317 "pic.y"
+{ yyval.crn = &object::south; }
+break;
+case 188:
+#line 1319 "pic.y"
+{ yyval.crn = &object::west; }
+break;
+case 189:
+#line 1321 "pic.y"
+{ yyval.crn = &object::east; }
+break;
+case 190:
+#line 1323 "pic.y"
+{ yyval.crn = &object::north_west; }
+break;
+case 191:
+#line 1325 "pic.y"
+{ yyval.crn = &object::south_west; }
+break;
+case 192:
+#line 1327 "pic.y"
+{ yyval.crn = &object::north_east; }
+break;
+case 193:
+#line 1329 "pic.y"
+{ yyval.crn = &object::south_east; }
+break;
+case 194:
+#line 1331 "pic.y"
+{ yyval.crn = &object::west; }
+break;
+case 195:
+#line 1333 "pic.y"
+{ yyval.crn = &object::east; }
+break;
+case 196:
+#line 1335 "pic.y"
+{ yyval.crn = &object::north_west; }
+break;
+case 197:
+#line 1337 "pic.y"
+{ yyval.crn = &object::south_west; }
+break;
+case 198:
+#line 1339 "pic.y"
+{ yyval.crn = &object::north_east; }
+break;
+case 199:
+#line 1341 "pic.y"
+{ yyval.crn = &object::south_east; }
+break;
+case 200:
+#line 1343 "pic.y"
+{ yyval.crn = &object::center; }
+break;
+case 201:
+#line 1345 "pic.y"
+{ yyval.crn = &object::start; }
+break;
+case 202:
+#line 1347 "pic.y"
+{ yyval.crn = &object::end; }
+break;
+case 203:
+#line 1352 "pic.y"
+{
+		  if (!lookup_variable(yyvsp[0].str, & yyval.x)) {
+		    lex_error("there is no variable `%1'", yyvsp[0].str);
+		    YYABORT;
+		  }
+		  a_delete yyvsp[0].str;
+		}
+break;
+case 204:
+#line 1360 "pic.y"
+{ yyval.x = yyvsp[0].x; }
+break;
+case 205:
+#line 1362 "pic.y"
+{
+		  if (yyvsp[-1].pl.obj != 0)
+		    yyval.x = yyvsp[-1].pl.obj->origin().x;
+		  else
+		    yyval.x = yyvsp[-1].pl.x;
+		}
+break;
+case 206:
+#line 1369 "pic.y"
+{
+		  if (yyvsp[-1].pl.obj != 0)
+		    yyval.x = yyvsp[-1].pl.obj->origin().y;
+		  else
+		    yyval.x = yyvsp[-1].pl.y;
+		}
+break;
+case 207:
+#line 1376 "pic.y"
+{
+		  if (yyvsp[-1].pl.obj != 0)
+		    yyval.x = yyvsp[-1].pl.obj->height();
+		  else
+		    yyval.x = 0.0;
+		}
+break;
+case 208:
+#line 1383 "pic.y"
+{
+		  if (yyvsp[-1].pl.obj != 0)
+		    yyval.x = yyvsp[-1].pl.obj->width();
+		  else
+		    yyval.x = 0.0;
+		}
+break;
+case 209:
+#line 1390 "pic.y"
+{
+		  if (yyvsp[-1].pl.obj != 0)
+		    yyval.x = yyvsp[-1].pl.obj->radius();
+		  else
+		    yyval.x = 0.0;
+		}
+break;
+case 210:
+#line 1397 "pic.y"
+{ yyval.x = yyvsp[-2].x + yyvsp[0].x; }
+break;
+case 211:
+#line 1399 "pic.y"
+{ yyval.x = yyvsp[-2].x - yyvsp[0].x; }
+break;
+case 212:
+#line 1401 "pic.y"
+{ yyval.x = yyvsp[-2].x * yyvsp[0].x; }
+break;
+case 213:
+#line 1403 "pic.y"
+{
+		  if (yyvsp[0].x == 0.0) {
+		    lex_error("division by zero");
+		    YYABORT;
+		  }
+		  yyval.x = yyvsp[-2].x/yyvsp[0].x;
+		}
+break;
+case 214:
+#line 1411 "pic.y"
+{
+		  if (yyvsp[0].x == 0.0) {
+		    lex_error("modulus by zero");
+		    YYABORT;
+		  }
+		  yyval.x = fmod(yyvsp[-2].x, yyvsp[0].x);
+		}
+break;
+case 215:
+#line 1419 "pic.y"
+{
+		  errno = 0;
+		  yyval.x = pow(yyvsp[-2].x, yyvsp[0].x);
+		  if (errno == EDOM) {
+		    lex_error("arguments to `^' operator out of domain");
+		    YYABORT;
+		  }
+		  if (errno == ERANGE) {
+		    lex_error("result of `^' operator out of range");
+		    YYABORT;
+		  }
+		}
+break;
+case 216:
+#line 1432 "pic.y"
+{ yyval.x = -yyvsp[0].x; }
+break;
+case 217:
+#line 1434 "pic.y"
+{ yyval.x = yyvsp[-1].x; }
+break;
+case 218:
+#line 1436 "pic.y"
+{
+		  errno = 0;
+		  yyval.x = sin(yyvsp[-1].x);
+		  if (errno == ERANGE) {
+		    lex_error("sin result out of range");
+		    YYABORT;
+		  }
+		}
+break;
+case 219:
+#line 1445 "pic.y"
+{
+		  errno = 0;
+		  yyval.x = cos(yyvsp[-1].x);
+		  if (errno == ERANGE) {
+		    lex_error("cos result out of range");
+		    YYABORT;
+		  }
+		}
+break;
+case 220:
+#line 1454 "pic.y"
+{
+		  errno = 0;
+		  yyval.x = atan2(yyvsp[-3].x, yyvsp[-1].x);
+		  if (errno == EDOM) {
+		    lex_error("atan2 argument out of domain");
+		    YYABORT;
+		  }
+		  if (errno == ERANGE) {
+		    lex_error("atan2 result out of range");
+		    YYABORT;
+		  }
+		}
+break;
+case 221:
+#line 1467 "pic.y"
+{
+		  errno = 0;
+		  yyval.x = log10(yyvsp[-1].x);
+		  if (errno == ERANGE) {
+		    lex_error("log result out of range");
+		    YYABORT;
+		  }
+		}
+break;
+case 222:
+#line 1476 "pic.y"
+{
+		  errno = 0;
+		  yyval.x = pow(10.0, yyvsp[-1].x);
+		  if (errno == ERANGE) {
+		    lex_error("exp result out of range");
+		    YYABORT;
+		  }
+		}
+break;
+case 223:
+#line 1485 "pic.y"
+{
+		  errno = 0;
+		  yyval.x = sqrt(yyvsp[-1].x);
+		  if (errno == EDOM) {
+		    lex_error("sqrt argument out of domain");
+		    YYABORT;
+		  }
+		}
+break;
+case 224:
+#line 1494 "pic.y"
+{ yyval.x = yyvsp[-3].x > yyvsp[-1].x ? yyvsp[-3].x : yyvsp[-1].x; }
+break;
+case 225:
+#line 1496 "pic.y"
+{ yyval.x = yyvsp[-3].x < yyvsp[-1].x ? yyvsp[-3].x : yyvsp[-1].x; }
+break;
+case 226:
+#line 1498 "pic.y"
+{ yyval.x = floor(yyvsp[-1].x); }
+break;
+case 227:
+#line 1500 "pic.y"
+{ yyval.x = 1.0 + floor(((rand()&0x7fff)/double(0x7fff))*yyvsp[-1].x); }
+break;
+case 228:
+#line 1502 "pic.y"
+{
+		  /* return a random number in the range [0,1) */
+		  /* portable, but not very random */
+		  yyval.x = (rand() & 0x7fff) / double(0x8000);
+		}
+break;
+case 229:
+#line 1508 "pic.y"
+{ yyval.x = (yyvsp[-2].x < yyvsp[0].x); }
+break;
+case 230:
+#line 1510 "pic.y"
+{ yyval.x = (yyvsp[-2].x <= yyvsp[0].x); }
+break;
+case 231:
+#line 1512 "pic.y"
+{ yyval.x = (yyvsp[-2].x > yyvsp[0].x); }
+break;
+case 232:
+#line 1514 "pic.y"
+{ yyval.x = (yyvsp[-2].x >= yyvsp[0].x); }
+break;
+case 233:
+#line 1516 "pic.y"
+{ yyval.x = (yyvsp[-2].x == yyvsp[0].x); }
+break;
+case 234:
+#line 1518 "pic.y"
+{ yyval.x = (yyvsp[-2].x != yyvsp[0].x); }
+break;
+case 235:
+#line 1520 "pic.y"
+{ yyval.x = (yyvsp[-2].x != 0.0 && yyvsp[0].x != 0.0); }
+break;
+case 236:
+#line 1522 "pic.y"
+{ yyval.x = (yyvsp[-2].x != 0.0 || yyvsp[0].x != 0.0); }
+break;
+case 237:
+#line 1524 "pic.y"
+{ yyval.x = (yyvsp[0].x == 0.0); }
+break;
+#line 5174 "y.tab.c"
+    }
+    yyssp -= yym;
+    yystate = *yyssp;
+    yyvsp -= yym;
+    yym = yylhs[yyn];
+    if (yystate == 0 && yym == 0)
+    {
+#if YYDEBUG
+        if (yydebug)
+            printf("yydebug: after reduction, shifting from state 0 to\
+ state %d\n", YYFINAL);
+#endif
+        yystate = YYFINAL;
+        *++yyssp = YYFINAL;
+        *++yyvsp = yyval;
+        if (yychar < 0)
+        {
+            if ((yychar = yylex()) < 0) yychar = 0;
+#if YYDEBUG
+            if (yydebug)
+            {
+                yys = 0;
+                if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
+                if (!yys) yys = "illegal-symbol";
+                printf("yydebug: state %d, reading %d (%s)\n",
+                        YYFINAL, yychar, yys);
+            }
+#endif
+        }
+        if (yychar == 0) goto yyaccept;
+        goto yyloop;
+    }
+    if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&
+            yyn <= YYTABLESIZE && yycheck[yyn] == yystate)
+        yystate = yytable[yyn];
+    else
+        yystate = yydgoto[yym];
+#if YYDEBUG
+    if (yydebug)
+        printf("yydebug: after reduction, shifting from state %d \
+to state %d\n", *yyssp, yystate);
+#endif
+    if (yyssp >= yysse)
+    {
+        int depth = yyssp - yyss;
+        if (yygrow () != 0)
+          goto yyoverflow;
+        yysse = yyss + yystacksize - 1;
+        yyssp = yyss + depth;
+        yyvsp = yyvs + depth;
+    }
+    *++yyssp = yystate;
+    *++yyvsp = yyval;
+    goto yyloop;
+yyoverflow:
+    yyerror("yacc stack overflow");
+yyabort:
+    return (1);
+yyaccept:
+    return (0);
+}
+
+static int
+yygrow ()
+{
+    int old_stacksize = yystacksize;
+    short *new_yyss;
+    YYSTYPE *new_yyvs;
+
+    if (yystacksize >= YYMAXDEPTH)
+        return (1);
+    yystacksize *= 2;
+    if (yystacksize > YYMAXDEPTH)
+        yystacksize = YYMAXDEPTH;
+#if YYDEBUG
+    if (yydebug)
+        printf("yydebug: growing stack size from %d to %d\n",
+               old_stacksize, yystacksize);
+#endif
+    new_yyss = (short *) yyrealloc (yyss, yystacksize * sizeof (short));
+    if (new_yyss == 0)
+        return (1);
+    new_yyvs = (YYSTYPE *) yyrealloc (yyvs, yystacksize * sizeof (YYSTYPE));
+    if (new_yyvs == 0)
+    {
+        yyfree (new_yyss);
+        return (1);
+    }
+    yyss = new_yyss;
+    yyvs = new_yyvs;
+    return (0);
+}
+
+static YYPTR
+YYDEFUN (yymalloc, (bytes), unsigned bytes)
+{
+    YYPTR ptr = (YYPTR) malloc (bytes);
+    if (ptr != 0) return (ptr);
+    yyerror ("yyparse: memory exhausted");
+    return (0);
+}
+
+static YYPTR
+YYDEFUN (yyrealloc, (old, bytes), YYPTR old YYAND unsigned bytes)
+{
+    YYPTR ptr = (YYPTR) realloc (old, bytes);
+    if (ptr != 0) return (ptr);
+    yyerror ("yyparse: memory exhausted");
+    return (0);
+}
diff --git a/contrib/groff/pic/pic.h b/contrib/groff/pic/pic.h
new file mode 100644
index 000000000000..70e95676e9f3
--- /dev/null
+++ b/contrib/groff/pic/pic.h
@@ -0,0 +1,102 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+#include <stdlib.h>
+#include <errno.h>
+
+extern "C" {
+  double hypot(double, double);
+}
+
+#include "assert.h"
+#include "cset.h"
+#include "lib.h"
+#include "stringclass.h"
+#include "errarg.h"
+#include "error.h"
+#include "position.h"
+#include "text.h"
+#include "output.h"
+
+#ifndef M_SQRT2
+#define M_SQRT2	1.41421356237309504880
+#endif
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+class input {
+  input *next;
+public:
+  input();
+  virtual ~input();
+  virtual int get() = 0;
+  virtual int peek() = 0;
+  virtual int get_location(const char **, int *);
+  friend class input_stack;
+  friend class copy_rest_thru_input;
+};
+
+class file_input : public input {
+  FILE *fp;
+  const char *filename;
+  int lineno;
+  string line;
+  const char *ptr;
+  int read_line();
+public:
+  file_input(FILE *, const char *);
+  ~file_input();
+  int get();
+  int peek();
+  int get_location(const char **, int *);
+};
+
+void lex_init(input *);
+int get_location(char **, int *);
+
+void do_copy(const char *file);
+void parse_init();
+void parse_cleanup();
+
+void lex_error(const char *message,
+	       const errarg &arg1 = empty_errarg,
+	       const errarg &arg2 = empty_errarg,
+	       const errarg &arg3 = empty_errarg);
+
+void lex_warning(const char *message,
+		 const errarg &arg1 = empty_errarg,
+		 const errarg &arg2 = empty_errarg,
+		 const errarg &arg3 = empty_errarg);
+
+void lex_cleanup();
+
+extern int flyback_flag;
+extern int command_char;
+// zero_length_line_flag is non-zero if zero-length lines are drawn 
+// as dots by the output device
+extern int zero_length_line_flag;
+extern int driver_extension_flag;
+extern int compatible_flag;
+extern int safer_flag;
diff --git a/contrib/groff/pic/pic.man b/contrib/groff/pic/pic.man
new file mode 100644
index 000000000000..5e2d142f331c
--- /dev/null
+++ b/contrib/groff/pic/pic.man
@@ -0,0 +1,753 @@
+.ig \"-*- nroff -*-
+Copyright (C) 1989-1995 Free Software Foundation, Inc.
+
+Permission is granted to make and distribute verbatim copies of
+this manual provided the copyright notice and this permission notice
+are preserved on all copies.
+
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided that the
+entire resulting derived work is distributed under the terms of a
+permission notice identical to this one.
+
+Permission is granted to copy and distribute translations of this
+manual into another language, under the above conditions for modified
+versions, except that this permission notice may be included in
+translations approved by the Free Software Foundation instead of in
+the original English.
+..
+.\" Like TP, but if specified indent is more than half
+.\" the current line-length - indent, use the default indent.
+.de Tp
+.ie \\n(.$=0:((0\\$1)*2u>(\\n(.lu-\\n(.iu)) .TP
+.el .TP "\\$1"
+..
+.ie t .ds tx T\h'-.1667m'\v'.224m'E\v'-.224m'\h'-.125m'X
+.el .ds tx TeX
+.ie \n(.g .ds ic \/
+.el .ds ic \^
+.\" The BSD man macros can't handle " in arguments to font change macros,
+.\" so use \(ts instead of ".
+.tr \(ts"
+.TH @G@PIC @MAN1EXT@ "@MDATE@" "Groff Version @VERSION@"
+.SH NAME
+@g@pic \- compile pictures for troff or TeX
+.SH SYNOPSIS
+.B @g@pic
+[
+.B \-nvC
+]
+[
+.I filename
+\&.\|.\|.
+]
+.br
+.B @g@pic
+.B \-t
+[
+.B \-cvzC
+]
+[
+.I filename
+\&.\|.\|.
+]
+.SH DESCRIPTION
+.LP
+This manual page describes the GNU version of
+.BR pic ,
+which is part of the groff document formatting system.
+.B pic
+compiles descriptions of pictures embedded within
+.B troff
+or \*(tx input files into commands that are understood by \*(tx or
+.BR troff .
+Each picture starts with a line beginning with
+.B .PS
+and ends with a line beginning with
+.BR .PE .
+Anything outside of
+.B .PS
+and
+.B .PE
+is passed through without change.
+.LP
+It is the user's responsibility to provide appropriate definitions of the
+.B PS
+and
+.B PE
+macros.
+When the macro package being used does not supply such definitions
+(for example, old versions of \-ms),
+appropriate definitions can be obtained with
+.BR \-mpic :
+these will center each picture.
+.SH OPTIONS
+.LP
+Options that do not take arguments may be grouped behind a single
+.BR \- .
+The special option
+.B \-\^\-
+can be used to mark the end of the options.
+A filename of
+.B \-
+refers to the standard input.
+.TP
+.B \-C
+Recognize
+.B .PS
+and
+.B .PE
+even when followed by a character other than space or newline.
+.TP
+.B \-S
+Safer mode; do not execute
+.B sh
+commands.
+This can be useful when operating on untrustworthy input.
+.TP
+.B \-n
+Don't use the groff extensions to the troff drawing commands.
+You should use this if you are using a postprocessor that doesn't support
+these extensions.
+The extensions are described in
+.BR groff_out (@MAN5EXT@).
+The
+.B \-n
+option also causes pic
+not to use zero-length lines to draw dots in troff mode.
+.TP
+.B \-t
+\*(tx mode.
+.TP
+.B \-c
+Be more compatible with
+.BR tpic .
+Implies
+.BR \-t .
+Lines beginning with
+.B \e
+are not passed through transparently.
+Lines beginning with
+.B .
+are passed through with the initial
+.B .
+changed to
+.BR \e .
+A line beginning with
+.B .ps
+is given special treatment:
+it takes an optional integer argument specifying
+the line thickness (pen size) in milliinches;
+a missing argument restores the previous line thickness;
+the default line thickness is 8 milliinches.
+The line thickness thus specified takes effect only
+when a non-negative line thickness has not been
+specified by use of the
+.B thickness
+attribute or by setting the
+.B linethick
+variable.
+.TP
+.B \-v
+Print the version number.
+.TP
+.B \-z
+In \*(tx mode draw dots using zero-length lines.
+.LP
+The following options supported by other versions of
+.B pic
+are ignored:
+.TP
+.B \-D
+Draw all lines using the \eD escape sequence.
+.B pic
+always does this.
+.TP
+.BI \-T \ dev
+Generate output for the
+.B troff
+device
+.IR dev .
+This is unnecessary because the
+.B troff
+output generated by
+.B pic
+is device-independent.
+.SH USAGE
+This section describes only the differences between GNU pic and the original
+version of pic.
+Many of these differences also apply to newer versions of Unix pic.
+.SS \*(tx mode
+.LP
+\*(tx mode is enabled by the
+.B \-t
+option.
+In \*(tx mode, pic will define a vbox called
+.B \egraph
+for each picture.
+You must yourself print that vbox using, for example, the command
+.RS
+.LP
+.B
+\ecenterline{\ebox\egraph}
+.RE
+.LP
+Actually, since the vbox has a height of zero this will produce
+slightly more vertical space above the picture than below it;
+.RS
+.LP
+.B
+\ecenterline{\eraise 1em\ebox\egraph}
+.RE
+.LP
+would avoid this.
+.LP
+You must use a \*(tx driver that supports the
+.B tpic
+specials, version 2.
+.LP
+Lines beginning with
+.B \e
+are passed through transparently; a
+.B %
+is added to the end of the line to avoid unwanted spaces.
+You can safely use this feature to change fonts or to
+change the value of
+.BR \ebaselineskip .
+Anything else may well produce undesirable results; use at your own risk.
+Lines beginning with a period are not given any special treatment.
+.SS Commands
+.TP
+\fBfor\fR \fIvariable\fR \fB=\fR \fIexpr1\fR \fBto\fR \fIexpr2\fR \
+[\fBby\fR [\fB*\fR]\fIexpr3\fR] \fBdo\fR \fIX\fR \fIbody\fR \fIX\fR
+Set
+.I variable
+to
+.IR expr1 .
+While the value of
+.I variable
+is less than or equal to
+.IR expr2 ,
+do
+.I body
+and increment
+.I variable
+by
+.IR expr3 ;
+if
+.B by
+is not given, increment
+.I variable
+by 1.
+If
+.I expr3
+is prefixed by
+.B *
+then
+.I variable
+will instead be multiplied by
+.IR expr3 .
+.I X
+can be any character not occurring in
+.IR body .
+.TP
+\fBif\fR \fIexpr\fR \fBthen\fR \fIX\fR \fIif-true\fR \fIX\fR \
+[\fBelse\fR \fIY\fR \fIif-false\fR \fIY\fR]
+Evaluate
+.IR expr ;
+if it is non-zero then do
+.IR if-true ,
+otherwise do
+.IR if-false .
+.I X
+can be any character not occurring in
+.IR if-true .
+.I Y
+can be any character not occurring in
+.IR if-false .
+.TP
+\fBprint\fR \fIarg\fR\|.\|.\|.
+Concatenate the arguments and print as a line on stderr.
+Each
+.I arg
+must be an expression, a position, or text.
+This is useful for debugging.
+.TP
+\fBcommand\fR \fIarg\fR\|.\|.\|.
+Concatenate the arguments
+and pass them through as a line to troff or\*(tx.
+Each
+.I arg
+must be an expression, a position, or text.
+This has a similar effect to a line beginning with
+.B .
+or
+.BR \e ,
+but allows the values of variables to be passed through.
+.TP
+\fBsh\fR \fIX\fR \fIcommand\fR \fIX\fR
+Pass
+.I command
+to a shell.
+.I X
+can be any character not occurring in
+.IR command .
+.TP
+\fBcopy\fR \fB"\fIfilename\fB"\fR
+Include
+.I filename
+at this point in the file.
+.TP
+\fBcopy\fR [\fB"\fIfilename\fB"\fR] \fBthru\fR \fIX\fR \fIbody\fR \fIX\fR \
+[\fBuntil\fR \fB"\fIword\*(ic\fB"\fR]
+.ns
+.TP
+\fBcopy\fR [\fB"\fIfilename\fB"\fR] \fBthru\fR \fImacro\fR \
+[\fBuntil\fR \fB"\fIword\*(ic\fB"\fR]
+This construct does
+.I body
+once for each line of
+.IR filename ;
+the line is split into blank-delimited words,
+and occurrences of
+.BI $ i
+in
+.IR body ,
+for
+.I i
+between 1 and 9,
+are replaced by the
+.IR i -th
+word of the line.
+If
+.I filename
+is not given, lines are taken from the current input up to
+.BR .PE .
+If an
+.B until
+clause is specified,
+lines will be read only until a line the first word of which is
+.IR word ;
+that line will then be discarded.
+.I X
+can be any character not occurring in
+.IR body .
+For example,
+.RS
+.IP
+.ft B
+.nf
+\&.PS
+copy thru % circle at ($1,$2) % until "END"
+1 2
+3 4
+5 6
+END
+box
+\&.PE
+.ft
+.fi
+.RE
+.IP
+is equivalent to
+.RS
+.IP
+.ft B
+.nf
+\&.PS
+circle at (1,2)
+circle at (3,4)
+circle at (5,6)
+box
+\&.PE
+.ft
+.fi
+.RE
+.IP
+The commands to be performed for each line can also be taken
+from a macro defined earlier by giving the name of the macro
+as the argument to
+.BR thru .
+.LP
+.B reset
+.br
+.ns
+.TP
+\fBreset\fI variable1\fB,\fI variable2 .\^.\^.
+Reset pre-defined variables
+.IR variable1 ,
+.I variable2
+\&.\^.\^. to their default values.
+If no arguments are given, reset all pre-defined variables
+to their default values.
+Note that assigning a value to
+.B scale
+also causes all pre-defined variables that control dimensions
+to be reset to their default values times the new value of scale.
+.TP
+\fBplot\fR \fIexpr\fR [\fB"\fItext\*(ic\fB"\fR]
+This is a text object which is constructed by using
+.I text
+as a format string for sprintf
+with an argument of
+.IR expr .
+If
+.I text
+is omitted a format string of
+.B "\(ts%g\(ts"
+is used.
+Attributes can be specified in the same way as for a normal text
+object.
+Be very careful that you specify an appropriate format string;
+pic does only very limited checking of the string.
+This is deprecated in favour of
+.BR sprintf .
+.TP
+.IB variable := expr
+This is similar to
+.B =
+except
+.I variable
+must already be defined,
+and the value of
+.I variable
+will be changed only in the innermost block in which it is defined.
+(By contrast,
+.B =
+defines the variable in the current block if it is not already defined there,
+and then changes the value in the current block.)
+.LP
+Arguments of the form
+.IP
+.IR X\  anything\  X
+.LP
+are also allowed to be of the form
+.IP
+.BI {\  anything\  }
+.LP
+In this case
+.I anything
+can contain balanced occurrences of
+.B {
+and
+.BR } .
+Strings may contain
+.I X
+or imbalanced occurrences of
+.B {
+and
+.BR } .
+.SS Expressions
+The syntax for expressions has been significantly extended:
+.LP
+.IB  x\  ^\  y
+(exponentiation)
+.br
+.BI sin( x )
+.br
+.BI cos( x )
+.br
+.BI atan2( y , \ x )
+.br
+.BI log( x )
+(base 10)
+.br
+.BI exp( x )
+(base 10, ie 10\v'-.4m'\fIx\*(ic\fR\v'.4m')
+.br
+.BI sqrt( x )
+.br
+.BI int( x )
+.br
+.B rand()
+(return a random number between 0 and 1)
+.br
+.BI rand( x )
+(return a random number between 1 and
+.IR x ;
+deprecated)
+.br
+.BI max( e1 , \ e2 )
+.br
+.BI min( e1 , \ e2 )
+.br
+.BI ! e
+.br
+\fIe1\fB && \fIe2\fR
+.br
+\fIe1\fB || \fIe2\fR
+.br
+\fIe1\fB == \fIe2\fR
+.br
+\fIe1\fB != \fIe2\fR
+.br
+\fIe1\fB >= \fIe2\fR
+.br
+\fIe1\fB > \fIe2\fR
+.br
+\fIe1\fB <= \fIe2\fR
+.br
+\fIe1\fB < \fIe2\fR
+.br
+\fB"\fIstr1\*(ic\fB" == "\fIstr2\*(ic\fB"\fR
+.br
+\fB"\fIstr1\*(ic\fB" != "\fIstr2\*(ic\fB"\fR
+.br
+.LP
+String comparison expressions must be parenthesised in some contexts
+to avoid ambiguity.
+.SS Other Changes
+.LP
+A bare expression,
+.IR expr ,
+is acceptable as an attribute;
+it is equivalent to
+.IR dir\ expr ,
+where
+.I dir
+is the current direction.
+For example
+.IP
+.B line 2i
+.LP
+means draw a line 2 inches long in the current direction.
+.LP
+The maximum width and height of the picture are taken from the variables
+.B maxpswid
+and
+.BR maxpsht .
+Initially these have values 8.5 and 11.
+.LP
+Scientific notation is allowed for numbers.
+For example
+.RS
+.B
+x = 5e\-2
+.RE
+.LP
+Text attributes can be compounded.
+For example,
+.RS
+.B
+"foo" above ljust
+.RE
+is legal.
+.LP
+There is no limit to the depth to which blocks can be examined.
+For example,
+.RS
+.B
+[A: [B: [C: box ]]] with .A.B.C.sw at 1,2
+.br
+.B
+circle at last [\^].A.B.C
+.RE
+is acceptable.
+.LP
+Arcs now have compass points
+determined by the circle of which the arc is a part.
+.LP
+Circles and arcs can be dotted or dashed.
+In \*(tx mode splines can be dotted or dashed.
+.LP
+Boxes can have rounded corners.
+The
+.B rad
+attribute specifies the radius of the quarter-circles at each corner.
+If no
+.B rad
+or
+.B diam
+attribute is given, a radius of
+.B boxrad
+is used.
+Initially,
+.B boxrad
+has a value of 0.
+A box with rounded corners can be dotted or dashed.
+.LP
+The
+.B .PS
+line can have a second argument specifying a maximum height for
+the picture.
+If the width of zero is specified the width will be ignored in computing
+the scaling factor for the picture.
+Note that GNU pic will always scale a picture by the same amount
+vertically as horizontally.
+This is different from the
+.SM DWB
+2.0 pic which may scale a picture by a
+different amount vertically than horizontally if a height is
+specified.
+.LP
+Each text object has an invisible box associated with it.
+The compass points of a text object are determined by this box.
+The implicit motion associated with the object is also determined
+by this box.
+The dimensions of this box are taken from the width and height attributes;
+if the width attribute is not supplied then the width will be taken to be
+.BR textwid ;
+if the height attribute is not supplied then the height will be taken to be
+the number of text strings associated with the object
+times
+.BR textht .
+Initially
+.B textwid
+and
+.B textht
+have a value of 0.
+.LP
+In places where a quoted text string can be used,
+an expression of the form
+.IP
+.BI sprintf(\(ts format \(ts,\  arg ,\fR.\|.\|.\fB)
+.LP
+can also be used;
+this will produce the arguments formatted according to
+.IR format ,
+which should be a string as described in
+.BR printf (3)
+appropriate for the number of arguments supplied,
+using only the
+.BR e ,
+.BR f ,
+.B g
+or
+.B %
+format characters.
+.LP
+The thickness of the lines used to draw objects is controlled by the
+.B linethick
+variable.
+This gives the thickness of lines in points.
+A negative value means use the default thickness:
+in \*(tx output mode, this means use a thickness of 8 milliinches;
+in \*(tx output mode with the
+.B -c
+option, this means use the line thickness specified by
+.B .ps
+lines;
+in troff output mode, this means use a thickness proportional
+to the pointsize.
+A zero value means draw the thinnest possible line supported by
+the output device.
+Initially it has a value of -1.
+There is also a
+.BR thick [ ness ]
+attribute.
+For example,
+.RS
+.LP
+.B circle thickness 1.5
+.RE
+.LP
+would draw a circle using a line with a thickness of 1.5 points.
+The thickness of lines is not affected by the
+value of the
+.B scale
+variable, nor by the width or height given in the
+.B .PS
+line.
+.LP
+Boxes (including boxes with rounded corners),
+circles and ellipses can be filled by giving then an attribute of
+.BR fill [ ed ].
+This takes an optional argument of an expression with a value between
+0 and 1; 0 will fill it with white, 1 with black, values in between
+with a proportionally gray shade.
+A value greater than 1 can also be used:
+this means fill with the
+shade of gray that is currently being used for text and lines.
+Normally this will be black, but output devices may provide
+a mechanism for changing this.
+Without an argument, then the value of the variable
+.B fillval
+will be used.
+Initially this has a value of 0.5.
+The invisible attribute does not affect the filling of objects.
+Any text associated with a filled object will be added after the
+object has been filled, so that the text will not be obscured
+by the filling.
+.LP
+Arrow heads will be drawn as solid triangles if the variable
+.B arrowhead
+is non-zero and either \*(tx mode is enabled or
+the
+.B \-x
+option has been given.
+Initially
+.B arrowhead
+has a value of 1.
+.LP
+The troff output of pic is device-independent.
+The
+.B \-T
+option is therefore redundant.
+All numbers are taken to be in inches; numbers are never interpreted
+to be in troff machine units.
+.LP
+Objects can have an
+.B aligned
+attribute.
+This will only work when the postprocessor is
+.BR grops .
+Any text associated with an object having the
+.B aligned
+attribute will be rotated about the center of the object
+so that it is aligned in the direction from the start point
+to the end point of the object.
+Note that this attribute will have no effect for objects whose start and
+end points are coincident.
+.LP
+In places where
+.IB n th
+is allowed
+.BI ` expr 'th
+is also allowed.
+Note that
+.B 'th
+is a single token: no space is allowed between the
+.B '
+and the
+.BR th .
+For example,
+.IP
+.B
+.nf
+for i = 1 to 4 do {
+   line from `i'th box.nw to `i+1'th box.se
+}
+.fi
+.SH FILES
+.Tp \w'\fB@MACRODIR@/tmac.pic'u+3n
+.B
+@MACRODIR@/tmac.pic
+Example definitions of the
+.B PS
+and
+.B PE
+macros.
+.SH "SEE ALSO"
+.BR @g@troff (@MAN1EXT@),
+.BR groff_out (@MAN5EXT@),
+.BR tex (1)
+.br
+Tpic: Pic for \*(tx
+.br
+AT&T Bell Laboratories, Computing Science Technical Report No.\ 116,
+PIC \(em A Graphics Language for Typesetting.
+(This can be obtained by sending a mail message to netlib@research.att.com
+with a body of `send\ 116\ from\ research/cstr'.)
+.SH BUGS
+.LP
+Input characters that are illegal for
+.B groff
+(ie those with
+.SM ASCII
+code 0 or between 013 and 037 octal or between 0200 and 0237 octal)
+are rejected even in \*(tx mode.
+.LP
+The interpretation of
+.B fillval
+is incompatible with the pic in 10th edition Unix,
+which interprets 0 as black and 1 as white.
diff --git a/contrib/groff/pic/pic.tab.h b/contrib/groff/pic/pic.tab.h
new file mode 100644
index 000000000000..c71bdfd2cd3e
--- /dev/null
+++ b/contrib/groff/pic/pic.tab.h
@@ -0,0 +1,129 @@
+#define LABEL 257
+#define VARIABLE 258
+#define NUMBER 259
+#define TEXT 260
+#define COMMAND_LINE 261
+#define DELIMITED 262
+#define ORDINAL 263
+#define TH 264
+#define LEFT_ARROW_HEAD 265
+#define RIGHT_ARROW_HEAD 266
+#define DOUBLE_ARROW_HEAD 267
+#define LAST 268
+#define UP 269
+#define DOWN 270
+#define LEFT 271
+#define RIGHT 272
+#define BOX 273
+#define CIRCLE 274
+#define ELLIPSE 275
+#define ARC 276
+#define LINE 277
+#define ARROW 278
+#define MOVE 279
+#define SPLINE 280
+#define HEIGHT 281
+#define RADIUS 282
+#define WIDTH 283
+#define DIAMETER 284
+#define FROM 285
+#define TO 286
+#define AT 287
+#define WITH 288
+#define BY 289
+#define THEN 290
+#define DOTTED 291
+#define DASHED 292
+#define CHOP 293
+#define SAME 294
+#define INVISIBLE 295
+#define LJUST 296
+#define RJUST 297
+#define ABOVE 298
+#define BELOW 299
+#define OF 300
+#define THE 301
+#define WAY 302
+#define BETWEEN 303
+#define AND 304
+#define HERE 305
+#define DOT_N 306
+#define DOT_E 307
+#define DOT_W 308
+#define DOT_S 309
+#define DOT_NE 310
+#define DOT_SE 311
+#define DOT_NW 312
+#define DOT_SW 313
+#define DOT_C 314
+#define DOT_START 315
+#define DOT_END 316
+#define DOT_X 317
+#define DOT_Y 318
+#define DOT_HT 319
+#define DOT_WID 320
+#define DOT_RAD 321
+#define SIN 322
+#define COS 323
+#define ATAN2 324
+#define LOG 325
+#define EXP 326
+#define SQRT 327
+#define K_MAX 328
+#define K_MIN 329
+#define INT 330
+#define RAND 331
+#define COPY 332
+#define THRU 333
+#define TOP 334
+#define BOTTOM 335
+#define UPPER 336
+#define LOWER 337
+#define SH 338
+#define PRINT 339
+#define CW 340
+#define CCW 341
+#define FOR 342
+#define DO 343
+#define IF 344
+#define ELSE 345
+#define ANDAND 346
+#define OROR 347
+#define NOTEQUAL 348
+#define EQUALEQUAL 349
+#define LESSEQUAL 350
+#define GREATEREQUAL 351
+#define LEFT_CORNER 352
+#define RIGHT_CORNER 353
+#define CENTER 354
+#define END 355
+#define START 356
+#define RESET 357
+#define UNTIL 358
+#define PLOT 359
+#define THICKNESS 360
+#define FILL 361
+#define ALIGNED 362
+#define SPRINTF 363
+#define COMMAND 364
+#define DEFINE 365
+#define UNDEF 366
+typedef union {
+	char *str;
+	int n;
+	double x;
+	struct { double x, y; } pair;
+	struct { double x; char *body; } if_data;
+	struct { char *str; const char *filename; int lineno; } lstr;
+	struct { double *v; int nv; int maxv; } dv;
+	struct { double val; int is_multiplicative; } by;
+	place pl;
+	object *obj;
+	corner crn;
+	path *pth;
+	object_spec *spec;
+	saved_state *pstate;
+	graphics_state state;
+	object_type obtype;
+} YYSTYPE;
+extern YYSTYPE yylval;
diff --git a/contrib/groff/pic/pic.y b/contrib/groff/pic/pic.y
new file mode 100644
index 000000000000..6c7f4ae0b5a8
--- /dev/null
+++ b/contrib/groff/pic/pic.y
@@ -0,0 +1,1795 @@
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+%{
+#include "pic.h"
+#include "ptable.h"
+#include "object.h"
+
+extern int delim_flag;
+extern void do_copy(const char *);
+extern void copy_rest_thru(const char *, const char *);
+extern void copy_file_thru(const char *, const char *, const char *);
+extern void push_body(const char *);
+extern void do_for(char *var, double from, double to,
+		   int by_is_multiplicative, double by, char *body);
+extern void do_lookahead();
+
+#undef fmod
+#undef rand
+
+extern "C" {
+  double fmod(double, double);
+  int rand();
+}
+
+/* Maximum number of characters produced by printf("%g") */
+#define GDIGITS 14
+
+int yylex();
+void yyerror(const char *);
+
+void reset(const char *nm);
+void reset_all();
+
+place *lookup_label(const char *);
+void define_label(const char *label, const place *pl);
+
+direction current_direction;
+position current_position;
+
+implement_ptable(place)
+
+PTABLE(place) top_table;
+
+PTABLE(place) *current_table = &top_table;
+saved_state *current_saved_state = 0;
+
+object_list olist;
+
+const char *ordinal_postfix(int n);
+const char *object_type_name(object_type type);
+char *format_number(const char *form, double n);
+char *do_sprintf(const char *form, const double *v, int nv);
+
+%}
+
+
+%union {
+	char *str;
+	int n;
+	double x;
+	struct { double x, y; } pair;
+	struct { double x; char *body; } if_data;
+	struct { char *str; const char *filename; int lineno; } lstr;
+	struct { double *v; int nv; int maxv; } dv;
+	struct { double val; int is_multiplicative; } by;
+	place pl;
+	object *obj;
+	corner crn;
+	path *pth;
+	object_spec *spec;
+	saved_state *pstate;
+	graphics_state state;
+	object_type obtype;
+}
+
+%token <str> LABEL
+%token <str> VARIABLE
+%token <x> NUMBER
+%token <lstr> TEXT
+%token <lstr> COMMAND_LINE
+%token <str> DELIMITED
+%token <n> ORDINAL
+%token TH
+%token LEFT_ARROW_HEAD
+%token RIGHT_ARROW_HEAD
+%token DOUBLE_ARROW_HEAD
+%token LAST
+%token UP
+%token DOWN
+%token LEFT
+%token RIGHT
+%token BOX
+%token CIRCLE
+%token ELLIPSE
+%token ARC
+%token LINE
+%token ARROW
+%token MOVE
+%token SPLINE
+%token HEIGHT
+%token RADIUS
+%token WIDTH
+%token DIAMETER
+%token UP
+%token DOWN
+%token RIGHT
+%token LEFT
+%token FROM
+%token TO
+%token AT
+%token WITH
+%token BY
+%token THEN
+%token DOTTED
+%token DASHED
+%token CHOP
+%token SAME
+%token INVISIBLE
+%token LJUST
+%token RJUST
+%token ABOVE
+%token BELOW
+%token OF
+%token THE
+%token WAY
+%token BETWEEN
+%token AND
+%token HERE
+%token DOT_N
+%token DOT_E	
+%token DOT_W
+%token DOT_S
+%token DOT_NE
+%token DOT_SE
+%token DOT_NW
+%token DOT_SW
+%token DOT_C
+%token DOT_START
+%token DOT_END
+%token DOT_X
+%token DOT_Y
+%token DOT_HT
+%token DOT_WID
+%token DOT_RAD
+%token SIN
+%token COS
+%token ATAN2
+%token LOG
+%token EXP
+%token SQRT
+%token K_MAX
+%token K_MIN
+%token INT
+%token RAND
+%token COPY
+%token THRU
+%token TOP
+%token BOTTOM
+%token UPPER
+%token LOWER
+%token SH
+%token PRINT
+%token CW
+%token CCW
+%token FOR
+%token DO
+%token IF
+%token ELSE
+%token ANDAND
+%token OROR
+%token NOTEQUAL
+%token EQUALEQUAL
+%token LESSEQUAL
+%token GREATEREQUAL
+%token LEFT_CORNER
+%token RIGHT_CORNER
+%token CENTER
+%token END
+%token START
+%token RESET
+%token UNTIL
+%token PLOT
+%token THICKNESS
+%token FILL
+%token ALIGNED
+%token SPRINTF
+%token COMMAND
+
+%token DEFINE
+%token UNDEF
+
+/* this ensures that plot 17 "%g" parses as (plot 17 "%g") */
+%left PLOT
+%left TEXT SPRINTF
+
+/* give text adjustments higher precedence than TEXT, so that
+box "foo" above ljust == box ("foo" above ljust)
+*/
+
+%left LJUST RJUST ABOVE BELOW
+
+%left LEFT RIGHT
+/* Give attributes that take an optional expression a higher
+precedence than left and right, so that eg `line chop left'
+parses properly. */
+%left CHOP DASHED DOTTED UP DOWN FILL
+%left LABEL
+
+%left VARIABLE NUMBER '(' SIN COS ATAN2 LOG EXP SQRT K_MAX K_MIN INT RAND LAST 
+%left ORDINAL HERE '`'
+
+/* these need to be lower than '-' */
+%left HEIGHT RADIUS WIDTH DIAMETER FROM TO AT THICKNESS
+
+/* these must have higher precedence than CHOP so that `label %prec CHOP'
+works */
+%left DOT_N DOT_E DOT_W DOT_S DOT_NE DOT_SE DOT_NW DOT_SW DOT_C
+%left DOT_START DOT_END TOP BOTTOM LEFT_CORNER RIGHT_CORNER
+%left UPPER LOWER CENTER START END
+
+%left ','
+%left OROR
+%left ANDAND
+%left EQUALEQUAL NOTEQUAL
+%left '<' '>' LESSEQUAL GREATEREQUAL
+
+%left BETWEEN OF
+%left AND
+
+%left '+' '-'
+%left '*' '/' '%'
+%right '!'
+%right '^'
+
+%type <x> expr any_expr text_expr
+%type <by> optional_by
+%type <pair> expr_pair position_not_place
+%type <if_data> simple_if
+%type <obj> nth_primitive
+%type <crn> corner
+%type <pth> path label_path relative_path
+%type <pl> place label element element_list middle_element_list
+%type <spec> object_spec
+%type <pair> position
+%type <obtype> object_type
+%type <n> optional_ordinal_last ordinal
+%type <str> until
+%type <dv> sprintf_args
+%type <lstr> text print_args print_arg
+
+%%
+
+top:
+	optional_separator
+	| element_list
+		{
+		  if (olist.head)
+		    print_picture(olist.head);
+		}
+	;
+
+
+element_list:
+	optional_separator middle_element_list optional_separator
+		{ $$ = $2; }
+	;
+
+middle_element_list:
+	element
+		{ $$ = $1; }
+	| middle_element_list separator element
+		{ $$ = $1; }
+	;
+
+optional_separator:
+	/* empty */
+	| separator
+	;
+
+separator:
+	';'
+	| separator ';'
+	;
+
+placeless_element:
+	VARIABLE '=' any_expr
+		{
+		  define_variable($1, $3);
+		  a_delete $1;
+		}
+	| VARIABLE ':' '=' any_expr
+		{
+		  place *p = lookup_label($1);
+		  if (!p) {
+		    lex_error("variable `%1' not defined", $1);
+		    YYABORT;
+		  }
+		  p->obj = 0;
+		  p->x = $4;
+		  p->y = 0.0;
+		  a_delete $1;
+		}
+	| UP
+		{ current_direction = UP_DIRECTION; }
+	| DOWN
+		{ current_direction = DOWN_DIRECTION; }
+	| LEFT
+		{ current_direction = LEFT_DIRECTION; }
+	| RIGHT
+		{ current_direction = RIGHT_DIRECTION; }
+	| COMMAND_LINE
+		{
+		  olist.append(make_command_object($1.str, $1.filename,
+						   $1.lineno));
+		}
+	| COMMAND print_args
+		{
+		  olist.append(make_command_object($2.str, $2.filename,
+						   $2.lineno));
+		}
+	| PRINT print_args
+		{
+		  fprintf(stderr, "%s\n", $2.str);
+		  a_delete $2.str;
+	          fflush(stderr);
+		}
+	| SH
+		{ delim_flag = 1; }
+	  DELIMITED
+		{
+		  delim_flag = 0;
+		  if (safer_flag)
+		    lex_error("unsafe to run command `%1'", $3);
+		  else
+		    system($3);
+		  a_delete $3;
+		}
+	| COPY TEXT
+		{
+		  if (yychar < 0)
+		    do_lookahead();
+		  do_copy($2.str);
+		  // do not delete the filename
+		}
+	| COPY TEXT THRU
+		{ delim_flag = 2; }
+	  DELIMITED 
+		{ delim_flag = 0; }
+	  until
+		{
+		  if (yychar < 0)
+		    do_lookahead();
+		  copy_file_thru($2.str, $5, $7);
+		  // do not delete the filename
+		  a_delete $5;
+		  a_delete $7;
+		}
+	| COPY THRU
+		{ delim_flag = 2; }
+	  DELIMITED
+		{ delim_flag = 0; }
+	  until
+		{
+		  if (yychar < 0)
+		    do_lookahead();
+		  copy_rest_thru($4, $6);
+		  a_delete $4;
+		  a_delete $6;
+		}
+	| FOR VARIABLE '=' expr TO expr optional_by DO
+	  	{ delim_flag = 1; }
+	  DELIMITED
+	  	{
+		  delim_flag = 0;
+		  if (yychar < 0)
+		    do_lookahead();
+		  do_for($2, $4, $6, $7.is_multiplicative, $7.val, $10); 
+		}
+	| simple_if
+		{
+		  if (yychar < 0)
+		    do_lookahead();
+		  if ($1.x != 0.0)
+		    push_body($1.body);
+		  a_delete $1.body;
+		}
+	| simple_if ELSE
+		{ delim_flag = 1; }
+	  DELIMITED
+		{
+		  delim_flag = 0;
+		  if (yychar < 0)
+		    do_lookahead();
+		  if ($1.x != 0.0)
+		    push_body($1.body);
+		  else
+		    push_body($4);
+		  a_delete $1.body;
+		  a_delete $4;
+		}
+	| reset_variables
+	| RESET
+		{ define_variable("scale", 1.0); }
+	;
+
+reset_variables:
+	RESET VARIABLE
+		{ reset($2); a_delete $2; }
+	| reset_variables VARIABLE
+		{ reset($2); a_delete $2; }
+	| reset_variables ',' VARIABLE
+		{ reset($3); a_delete $3; }
+	;
+
+print_args:
+	print_arg
+		{ $$ = $1; }
+	| print_args print_arg
+		{
+		  $$.str = new char[strlen($1.str) + strlen($2.str) + 1];
+		  strcpy($$.str, $1.str);
+		  strcat($$.str, $2.str);
+		  a_delete $1.str;
+		  a_delete $2.str;
+		  if ($1.filename) {
+		    $$.filename = $1.filename;
+		    $$.lineno = $1.lineno;
+		  }
+		  else if ($2.filename) {
+		    $$.filename = $2.filename;
+		    $$.lineno = $2.lineno;
+		  }
+		}
+	;
+
+print_arg:
+  	expr               %prec ','
+		{
+		  $$.str = new char[GDIGITS + 1];
+		  sprintf($$.str, "%g", $1);
+		  $$.filename = 0;
+		  $$.lineno = 0;
+		}
+	| text
+		{ $$ = $1; }
+	| position          %prec ','
+		{
+		  $$.str = new char[GDIGITS + 2 + GDIGITS + 1];
+		  sprintf($$.str, "%g, %g", $1.x, $1.y);
+		  $$.filename = 0;
+		  $$.lineno = 0;
+		}
+
+simple_if:
+	IF any_expr THEN
+		{ delim_flag = 1; }
+	DELIMITED
+		{ delim_flag = 0; $$.x = $2; $$.body = $5; }
+	;
+
+until:
+	/* empty */
+		{ $$ = 0; }
+	| UNTIL TEXT
+		{ $$ = $2.str; }
+	;
+	
+any_expr:
+	expr
+		{ $$ = $1; }
+	| text_expr
+		{ $$ = $1; }
+	;
+	
+text_expr:
+	text EQUALEQUAL text
+		{
+		  $$ = strcmp($1.str, $3.str) == 0;
+		  a_delete $1.str;
+		  a_delete $3.str;
+		}
+	| text NOTEQUAL text
+		{
+		  $$ = strcmp($1.str, $3.str) != 0;
+		  a_delete $1.str;
+		  a_delete $3.str;
+		}
+	| text_expr ANDAND text_expr
+		{ $$ = ($1 != 0.0 && $3 != 0.0); }
+	| text_expr ANDAND expr
+		{ $$ = ($1 != 0.0 && $3 != 0.0); }
+	| expr ANDAND text_expr
+		{ $$ = ($1 != 0.0 && $3 != 0.0); }
+	| text_expr OROR text_expr
+		{ $$ = ($1 != 0.0 || $3 != 0.0); }
+	| text_expr OROR expr
+		{ $$ = ($1 != 0.0 || $3 != 0.0); }
+	| expr OROR text_expr
+		{ $$ = ($1 != 0.0 || $3 != 0.0); }
+	| '!' text_expr
+		{ $$ = ($2 == 0.0); }
+	;
+
+
+optional_by:
+	/* empty */
+		{ $$.val = 1.0; $$.is_multiplicative = 0; }
+	| BY expr
+		{ $$.val = $2; $$.is_multiplicative = 0; }
+	| BY '*' expr
+		{ $$.val = $3; $$.is_multiplicative = 1; }
+	;
+
+element:
+	object_spec
+		{
+		  $$.obj = $1->make_object(&current_position,
+					   &current_direction);
+		  if ($$.obj == 0)
+		    YYABORT;
+		  delete $1;
+		  if ($$.obj)
+		    olist.append($$.obj);
+		  else {
+		    $$.x = current_position.x;
+		    $$.y = current_position.y;
+		  }
+		}
+	| LABEL ':' optional_separator element
+		{ $$ = $4; define_label($1, & $$); a_delete $1; }
+	| LABEL ':' optional_separator position_not_place
+		{
+		  $$.obj = 0;
+		  $$.x = $4.x;
+		  $$.y = $4.y;
+		  define_label($1, & $$);
+		  a_delete $1;
+		}
+	| LABEL ':' optional_separator place
+		{
+		  $$ = $4;
+		  define_label($1, & $$);
+		  a_delete $1;
+		}
+	| '{'
+		{
+		  $<state>$.x = current_position.x;
+		  $<state>$.y = current_position.y;
+		  $<state>$.dir = current_direction;
+		}
+	  element_list '}'
+		{
+		  current_position.x = $<state>2.x;
+		  current_position.y = $<state>2.y;
+		  current_direction = $<state>2.dir;
+		}
+	  optional_element
+		{
+		  $$ = $3;
+		}
+	| placeless_element
+		{
+		  $$.obj = 0;
+		  $$.x = current_position.x;
+		  $$.y = current_position.y;
+		}
+	;
+
+optional_element:
+	/* empty */
+		{}
+	| element
+		{}
+	;
+
+object_spec:
+	BOX
+		{
+		  $$ = new object_spec(BOX_OBJECT);
+		}
+	| CIRCLE
+		{
+		  $$ = new object_spec(CIRCLE_OBJECT);
+		}
+	| ELLIPSE
+		{
+		  $$ = new object_spec(ELLIPSE_OBJECT);
+		}
+	| ARC
+		{
+		  $$ = new object_spec(ARC_OBJECT);
+		  $$->dir = current_direction;
+		}
+	| LINE
+		{
+		  $$ = new object_spec(LINE_OBJECT);
+		  lookup_variable("lineht", & $$->segment_height);
+		  lookup_variable("linewid", & $$->segment_width);
+		  $$->dir = current_direction;
+		}
+	| ARROW
+		{
+		  $$ = new object_spec(ARROW_OBJECT);
+		  lookup_variable("lineht", & $$->segment_height);
+		  lookup_variable("linewid", & $$->segment_width);
+		  $$->dir = current_direction;
+		}
+	| MOVE
+		{
+		  $$ = new object_spec(MOVE_OBJECT);
+		  lookup_variable("moveht", & $$->segment_height);
+		  lookup_variable("movewid", & $$->segment_width);
+		  $$->dir = current_direction;
+		}
+	| SPLINE
+		{
+		  $$ = new object_spec(SPLINE_OBJECT);
+		  lookup_variable("lineht", & $$->segment_height);
+		  lookup_variable("linewid", & $$->segment_width);
+		  $$->dir = current_direction;
+		}
+	| text   %prec TEXT
+		{
+		  $$ = new object_spec(TEXT_OBJECT);
+		  $$->text = new text_item($1.str, $1.filename, $1.lineno);
+		}
+	| PLOT expr
+		{
+		  $$ = new object_spec(TEXT_OBJECT);
+		  $$->text = new text_item(format_number(0, $2), 0, -1);
+		}
+	| PLOT expr text
+		{
+		  $$ = new object_spec(TEXT_OBJECT);
+		  $$->text = new text_item(format_number($3.str, $2),
+					   $3.filename, $3.lineno);
+		  a_delete $3.str;
+		}
+	| '[' 
+		{
+		  saved_state *p = new saved_state;
+		  $<pstate>$ = p;
+		  p->x = current_position.x;
+		  p->y = current_position.y;
+		  p->dir = current_direction;
+		  p->tbl = current_table;
+		  p->prev = current_saved_state;
+		  current_position.x = 0.0;
+		  current_position.y = 0.0;
+		  current_table = new PTABLE(place);
+		  current_saved_state = p;
+		  olist.append(make_mark_object());
+		}
+	  element_list ']'
+		{
+		  current_position.x = $<pstate>2->x;
+		  current_position.y = $<pstate>2->y;
+		  current_direction = $<pstate>2->dir;
+		  $$ = new object_spec(BLOCK_OBJECT);
+		  olist.wrap_up_block(& $$->oblist);
+		  $$->tbl = current_table;
+		  current_table = $<pstate>2->tbl;
+		  current_saved_state = $<pstate>2->prev;
+		  delete $<pstate>2;
+		}
+	| object_spec HEIGHT expr
+		{
+		  $$ = $1;
+		  $$->height = $3;
+		  $$->flags |= HAS_HEIGHT;
+		}
+	| object_spec RADIUS expr
+		{
+		  $$ = $1;
+		  $$->radius = $3;
+		  $$->flags |= HAS_RADIUS;
+		}
+	| object_spec WIDTH expr
+		{
+		  $$ = $1;
+		  $$->width = $3;
+		  $$->flags |= HAS_WIDTH;
+		}
+	| object_spec DIAMETER expr
+		{
+		  $$ = $1;
+		  $$->radius = $3/2.0;
+		  $$->flags |= HAS_RADIUS;
+		}
+	| object_spec expr %prec HEIGHT
+		{
+		  $$ = $1;
+		  $$->flags |= HAS_SEGMENT;
+		  switch ($$->dir) {
+		  case UP_DIRECTION:
+		    $$->segment_pos.y += $2;
+		    break;
+		  case DOWN_DIRECTION:
+		    $$->segment_pos.y -= $2;
+		    break;
+		  case RIGHT_DIRECTION:
+		    $$->segment_pos.x += $2;
+		    break;
+		  case LEFT_DIRECTION:
+		    $$->segment_pos.x -= $2;
+		    break;
+		  }
+		}
+	| object_spec UP
+		{
+		  $$ = $1;
+		  $$->dir = UP_DIRECTION;
+		  $$->flags |= HAS_SEGMENT;
+		  $$->segment_pos.y += $$->segment_height;
+		}
+	| object_spec UP expr
+		{
+		  $$ = $1;
+		  $$->dir = UP_DIRECTION;
+		  $$->flags |= HAS_SEGMENT;
+		  $$->segment_pos.y += $3;
+		}
+	| object_spec DOWN
+		{
+		  $$ = $1;
+		  $$->dir = DOWN_DIRECTION;
+		  $$->flags |= HAS_SEGMENT;
+		  $$->segment_pos.y -= $$->segment_height;
+		}
+	| object_spec DOWN expr
+		{
+		  $$ = $1;
+		  $$->dir = DOWN_DIRECTION;
+		  $$->flags |= HAS_SEGMENT;
+		  $$->segment_pos.y -= $3;
+		}
+	| object_spec RIGHT
+		{
+		  $$ = $1;
+		  $$->dir = RIGHT_DIRECTION;
+		  $$->flags |= HAS_SEGMENT;
+		  $$->segment_pos.x += $$->segment_width;
+		}
+	| object_spec RIGHT expr
+		{
+		  $$ = $1;
+		  $$->dir = RIGHT_DIRECTION;
+		  $$->flags |= HAS_SEGMENT;
+		  $$->segment_pos.x += $3;
+		}
+	| object_spec LEFT
+		{
+		  $$ = $1;
+		  $$->dir = LEFT_DIRECTION;
+		  $$->flags |= HAS_SEGMENT;
+		  $$->segment_pos.x -= $$->segment_width;
+		}
+	| object_spec LEFT expr
+		{
+		  $$ = $1;
+		  $$->dir = LEFT_DIRECTION;
+		  $$->flags |= HAS_SEGMENT;
+		  $$->segment_pos.x -= $3;
+		}
+	| object_spec FROM position
+		{
+		  $$ = $1;
+		  $$->flags |= HAS_FROM;
+		  $$->from.x = $3.x;
+		  $$->from.y = $3.y;
+		}
+	| object_spec TO position
+		{
+		  $$ = $1;
+		  if ($$->flags & HAS_SEGMENT)
+		    $$->segment_list = new segment($$->segment_pos,
+						   $$->segment_is_absolute,
+						   $$->segment_list);
+		  $$->flags |= HAS_SEGMENT;
+		  $$->segment_pos.x = $3.x;
+		  $$->segment_pos.y = $3.y;
+		  $$->segment_is_absolute = 1;
+		  $$->flags |= HAS_TO;
+		  $$->to.x = $3.x;
+		  $$->to.y = $3.y;
+		}
+	| object_spec AT position
+		{
+		  $$ = $1;
+		  $$->flags |= HAS_AT;
+		  $$->at.x = $3.x;
+		  $$->at.y = $3.y;
+		  if ($$->type != ARC_OBJECT) {
+		    $$->flags |= HAS_FROM;
+		    $$->from.x = $3.x;
+		    $$->from.y = $3.y;
+		  }
+		}
+	| object_spec WITH path
+		{
+		  $$ = $1;
+		  $$->flags |= HAS_WITH;
+		  $$->with = $3;
+		}
+	| object_spec BY expr_pair
+		{
+		  $$ = $1;
+		  $$->flags |= HAS_SEGMENT;
+		  $$->segment_pos.x += $3.x;
+		  $$->segment_pos.y += $3.y;
+		}
+	| object_spec THEN
+  		{
+		  $$ = $1;
+		  if ($$->flags & HAS_SEGMENT) {
+		    $$->segment_list = new segment($$->segment_pos,
+						   $$->segment_is_absolute,
+						   $$->segment_list);
+		    $$->flags &= ~HAS_SEGMENT;
+		    $$->segment_pos.x = $$->segment_pos.y = 0.0;
+		    $$->segment_is_absolute = 0;
+		  }
+		}
+	| object_spec DOTTED
+		{
+		  $$ = $1;
+		  $$->flags |= IS_DOTTED;
+		  lookup_variable("dashwid", & $$->dash_width);
+		}
+	| object_spec DOTTED expr
+		{
+		  $$ = $1;
+		  $$->flags |= IS_DOTTED;
+		  $$->dash_width = $3;
+		}
+	| object_spec DASHED
+		{
+		  $$ = $1;
+		  $$->flags |= IS_DASHED;
+		  lookup_variable("dashwid", & $$->dash_width);
+		}
+	| object_spec DASHED expr
+		{
+		  $$ = $1;
+		  $$->flags |= IS_DASHED;
+		  $$->dash_width = $3;
+		}
+	| object_spec FILL
+		{
+		  $$ = $1;
+		  $$->flags |= IS_DEFAULT_FILLED;
+		}
+	| object_spec FILL expr
+		{
+		  $$ = $1;
+		  $$->flags |= IS_FILLED;
+		  $$->fill = $3;
+		}
+	| object_spec CHOP
+  		{
+		  $$ = $1;
+		  // line chop chop means line chop 0 chop 0
+		  if ($$->flags & IS_DEFAULT_CHOPPED) {
+		    $$->flags |= IS_CHOPPED;
+		    $$->flags &= ~IS_DEFAULT_CHOPPED;
+		    $$->start_chop = $$->end_chop = 0.0;
+		  }
+		  else if ($$->flags & IS_CHOPPED) {
+		    $$->end_chop = 0.0;
+		  }
+		  else {
+		    $$->flags |= IS_DEFAULT_CHOPPED;
+		  }
+		}
+	| object_spec CHOP expr
+		{
+		  $$ = $1;
+		  if ($$->flags & IS_DEFAULT_CHOPPED) {
+		    $$->flags |= IS_CHOPPED;
+		    $$->flags &= ~IS_DEFAULT_CHOPPED;
+		    $$->start_chop = 0.0;
+		    $$->end_chop = $3;
+		  }
+		  else if ($$->flags & IS_CHOPPED) {
+		    $$->end_chop = $3;
+		  }
+		  else {
+		    $$->start_chop = $$->end_chop = $3;
+		    $$->flags |= IS_CHOPPED;
+		  }
+		}
+	| object_spec SAME
+		{
+		  $$ = $1;
+		  $$->flags |= IS_SAME;
+		}
+	| object_spec INVISIBLE
+		{
+		  $$ = $1;
+		  $$->flags |= IS_INVISIBLE;
+		}
+	| object_spec LEFT_ARROW_HEAD
+		{
+		  $$ = $1;
+		  $$->flags |= HAS_LEFT_ARROW_HEAD;
+		}
+	| object_spec RIGHT_ARROW_HEAD
+		{
+		  $$ = $1;
+		  $$->flags |= HAS_RIGHT_ARROW_HEAD;
+		}
+	| object_spec DOUBLE_ARROW_HEAD
+		{
+		  $$ = $1;
+		  $$->flags |= (HAS_LEFT_ARROW_HEAD|HAS_RIGHT_ARROW_HEAD);
+		}
+	| object_spec CW
+		{
+		  $$ = $1;
+		  $$->flags |= IS_CLOCKWISE;
+		}
+	| object_spec CCW
+		{
+		  $$ = $1;
+		  $$->flags &= ~IS_CLOCKWISE;
+		}
+	| object_spec text   %prec TEXT
+		{
+		  $$ = $1;
+		  text_item **p;
+		  for (p = & $$->text; *p; p = &(*p)->next)
+		    ;
+		  *p = new text_item($2.str, $2.filename, $2.lineno);
+		}
+	| object_spec LJUST
+		{
+		  $$ = $1;
+		  if ($$->text) {
+		    text_item *p;
+		    for (p = $$->text; p->next; p = p->next)
+		      ;
+		    p->adj.h = LEFT_ADJUST;
+		  }
+		}
+	| object_spec RJUST
+		{
+		  $$ = $1;
+		  if ($$->text) {
+		    text_item *p;
+		    for (p = $$->text; p->next; p = p->next)
+		      ;
+		    p->adj.h = RIGHT_ADJUST;
+		  }
+		}
+	| object_spec ABOVE
+		{
+		  $$ = $1;
+		  if ($$->text) {
+		    text_item *p;
+		    for (p = $$->text; p->next; p = p->next)
+		      ;
+		    p->adj.v = ABOVE_ADJUST;
+		  }
+		}
+	| object_spec BELOW
+		{
+		  $$ = $1;
+		  if ($$->text) {
+		    text_item *p;
+		    for (p = $$->text; p->next; p = p->next)
+		      ;
+		    p->adj.v = BELOW_ADJUST;
+		  }
+		}
+	| object_spec THICKNESS expr
+		{
+		  $$ = $1;
+		  $$->flags |= HAS_THICKNESS;
+		  $$->thickness = $3;
+		}
+	| object_spec ALIGNED
+		{
+		  $$ = $1;
+		  $$->flags |= IS_ALIGNED;
+		}
+	;
+
+text:
+	TEXT
+		{
+		  $$ = $1;
+		}
+	| SPRINTF '(' TEXT sprintf_args ')'
+		{
+		  $$.filename = $3.filename;
+		  $$.lineno = $3.lineno;
+		  $$.str = do_sprintf($3.str, $4.v, $4.nv);
+		  a_delete $4.v;
+		  a_delete $3.str;
+		}
+	;
+
+sprintf_args:
+	/* empty */
+		{
+		  $$.v = 0;
+		  $$.nv = 0;
+		  $$.maxv = 0;
+		}
+	| sprintf_args ',' expr
+		{
+		  $$ = $1;
+		  if ($$.nv >= $$.maxv) {
+		    if ($$.nv == 0) {
+		      $$.v = new double[4];
+		      $$.maxv = 4;
+		    }
+		    else {
+		      double *oldv = $$.v;
+		      $$.maxv *= 2;
+		      $$.v = new double[$$.maxv];
+		      memcpy($$.v, oldv, $$.nv*sizeof(double));
+		      a_delete oldv;
+		    }
+		  }
+		  $$.v[$$.nv] = $3;
+		  $$.nv += 1;
+		}
+	;
+
+position:
+  	position_not_place
+		{ $$ = $1; }
+	| place
+  		{
+		  position pos = $1;
+		  $$.x = pos.x;
+		  $$.y = pos.y;
+		}
+	;
+
+position_not_place:
+	expr_pair
+		{ $$ = $1; }
+	| position '+' expr_pair
+		{
+		  $$.x = $1.x + $3.x;
+		  $$.y = $1.y + $3.y;
+		}
+	| position '-' expr_pair
+		{
+		  $$.x = $1.x - $3.x;
+		  $$.y = $1.y - $3.y;
+		}
+	| '(' position ',' position ')'
+		{
+		  $$.x = $2.x;
+		  $$.y = $4.y;
+		}
+	| expr between position AND position
+		{
+		  $$.x = (1.0 - $1)*$3.x + $1*$5.x;
+		  $$.y = (1.0 - $1)*$3.y + $1*$5.y;
+		}
+	| expr '<' position ',' position '>'
+		{
+		  $$.x = (1.0 - $1)*$3.x + $1*$5.x;
+		  $$.y = (1.0 - $1)*$3.y + $1*$5.y;
+		}
+	;
+
+between:
+	BETWEEN
+	| OF THE WAY BETWEEN
+	;
+
+expr_pair:
+	expr ',' expr
+		{ $$.x = $1; $$.y = $3; }
+	| '(' expr_pair ')'
+		{ $$ = $2; }
+	;
+
+place:
+	label  %prec CHOP /* line at A left == line (at A) left */
+		{ $$ = $1; }
+	| label corner
+		{
+		  path pth($2);
+		  if (!pth.follow($1, & $$))
+		    YYABORT;
+		}
+	| corner label
+		{
+		  path pth($1);
+		  if (!pth.follow($2, & $$))
+		    YYABORT;
+		}
+	| corner OF label
+		{
+		  path pth($1);
+		  if (!pth.follow($3, & $$))
+		    YYABORT;
+		}
+	| HERE
+		{
+		  $$.x = current_position.x;
+		  $$.y = current_position.y;
+		  $$.obj = 0;
+		}
+	;
+
+label:
+	LABEL
+		{
+		  place *p = lookup_label($1);
+		  if (!p) {
+		    lex_error("there is no place `%1'", $1);
+		    YYABORT;
+		  }
+		  $$ = *p;
+		  a_delete $1;
+		}
+	| nth_primitive
+		{
+		  $$.obj = $1;
+		}
+	| label '.' LABEL
+		{
+		  path pth($3);
+		  if (!pth.follow($1, & $$))
+		    YYABORT;
+		}
+	;
+
+ordinal:
+	ORDINAL
+		{ $$ = $1; }
+	| '`' any_expr TH
+		{
+		  // XXX Check for overflow (and non-integers?).
+		  $$ = (int)$2;
+		}
+	;
+
+optional_ordinal_last:
+        LAST
+		{ $$ = 1; }
+  	| ordinal LAST
+		{ $$ = $1; }
+	;
+
+nth_primitive:
+	ordinal object_type
+		{
+		  int count = 0;
+		  object *p;
+		  for (p = olist.head; p != 0; p = p->next)
+		    if (p->type() == $2 && ++count == $1) {
+		      $$ = p;
+		      break;
+		    }
+		  if (p == 0) {
+		    lex_error("there is no %1%2 %3", $1, ordinal_postfix($1),
+			      object_type_name($2));
+		    YYABORT;
+		  }
+		}
+	| optional_ordinal_last object_type
+		{
+		  int count = 0;
+		  object *p;
+		  for (p = olist.tail; p != 0; p = p->prev)
+		    if (p->type() == $2 && ++count == $1) {
+		      $$ = p;
+		      break;
+		    }
+		  if (p == 0) {
+		    lex_error("there is no %1%2 last %3", $1,
+			      ordinal_postfix($1), object_type_name($2));
+		    YYABORT;
+		  }
+		}
+	;
+
+object_type:
+	BOX
+  		{ $$ = BOX_OBJECT; }
+	| CIRCLE
+		{ $$ = CIRCLE_OBJECT; }
+	| ELLIPSE
+		{ $$ = ELLIPSE_OBJECT; }
+	| ARC
+		{ $$ = ARC_OBJECT; }
+	| LINE
+		{ $$ = LINE_OBJECT; }
+	| ARROW
+		{ $$ = ARROW_OBJECT; }
+	| SPLINE
+		{ $$ = SPLINE_OBJECT; }
+	| '[' ']'
+		{ $$ = BLOCK_OBJECT; }
+	| TEXT
+		{ $$ = TEXT_OBJECT; }
+	;
+
+label_path:
+ 	'.' LABEL
+		{
+		  $$ = new path($2);
+		}
+	| label_path '.' LABEL
+		{
+		  $$ = $1;
+		  $$->append($3);
+		}
+	;
+
+relative_path:
+	corner
+		{
+		  $$ = new path($1);
+		}
+	/* give this a lower precedence than LEFT and RIGHT so that
+	   [A: box] with .A left == [A: box] with (.A left) */
+
+  	| label_path %prec TEXT
+		{
+		  $$ = $1;
+		}
+	| label_path corner
+		{
+		  $$ = $1;
+		  $$->append($2);
+		}
+	;
+
+path:
+	relative_path
+		{
+		  $$ = $1;
+		}
+	| '(' relative_path ',' relative_path ')'
+		{
+		  $$ = $2;
+		  $$->set_ypath($4);
+		}
+	/* The rest of these rules are a compatibility sop. */
+	| ORDINAL LAST object_type relative_path
+		{
+		  lex_warning("`%1%2 last %3' in `with' argument ignored",
+			      $1, ordinal_postfix($1), object_type_name($3));
+		  $$ = $4;
+		}
+	| LAST object_type relative_path
+		{
+		  lex_warning("`last %1' in `with' argument ignored",
+			      object_type_name($2));
+		  $$ = $3;
+		}
+	| ORDINAL object_type relative_path
+		{
+		  lex_warning("`%1%2 %3' in `with' argument ignored",
+			      $1, ordinal_postfix($1), object_type_name($2));
+		  $$ = $3;
+		}
+	| LABEL relative_path
+		{
+		  lex_warning("initial `%1' in `with' argument ignored", $1);
+		  a_delete $1;
+		  $$ = $2;
+		}
+	;
+
+corner:
+	DOT_N
+		{ $$ = &object::north; }
+	| DOT_E	
+		{ $$ = &object::east; }
+	| DOT_W
+		{ $$ = &object::west; }
+	| DOT_S
+		{ $$ = &object::south; }
+	| DOT_NE
+		{ $$ = &object::north_east; }
+	| DOT_SE
+		{ $$ = &object:: south_east; }
+	| DOT_NW
+		{ $$ = &object::north_west; }
+	| DOT_SW
+		{ $$ = &object::south_west; }
+	| DOT_C
+		{ $$ = &object::center; }
+	| DOT_START
+		{ $$ = &object::start; }
+	| DOT_END
+		{ $$ = &object::end; }
+  	| TOP
+		{ $$ = &object::north; }
+	| BOTTOM
+		{ $$ = &object::south; }
+	| LEFT
+		{ $$ = &object::west; }
+	| RIGHT
+		{ $$ = &object::east; }
+	| UPPER LEFT
+		{ $$ = &object::north_west; }
+	| LOWER LEFT
+		{ $$ = &object::south_west; }
+	| UPPER RIGHT
+		{ $$ = &object::north_east; }
+	| LOWER RIGHT
+		{ $$ = &object::south_east; }
+	| LEFT_CORNER
+		{ $$ = &object::west; }
+	| RIGHT_CORNER
+		{ $$ = &object::east; }
+	| UPPER LEFT_CORNER
+		{ $$ = &object::north_west; }
+	| LOWER LEFT_CORNER
+		{ $$ = &object::south_west; }
+	| UPPER RIGHT_CORNER
+		{ $$ = &object::north_east; }
+	| LOWER RIGHT_CORNER
+		{ $$ = &object::south_east; }
+	| CENTER
+		{ $$ = &object::center; }
+	| START
+		{ $$ = &object::start; }
+	| END
+		{ $$ = &object::end; }
+	;
+
+expr:
+	VARIABLE
+		{
+		  if (!lookup_variable($1, & $$)) {
+		    lex_error("there is no variable `%1'", $1);
+		    YYABORT;
+		  }
+		  a_delete $1;
+		}
+	| NUMBER
+		{ $$ = $1; }
+	| place DOT_X
+  		{
+		  if ($1.obj != 0)
+		    $$ = $1.obj->origin().x;
+		  else
+		    $$ = $1.x;
+		}			
+	| place DOT_Y
+		{
+		  if ($1.obj != 0)
+		    $$ = $1.obj->origin().y;
+		  else
+		    $$ = $1.y;
+		}
+	| place DOT_HT
+		{
+		  if ($1.obj != 0)
+		    $$ = $1.obj->height();
+		  else
+		    $$ = 0.0;
+		}
+	| place DOT_WID
+		{
+		  if ($1.obj != 0)
+		    $$ = $1.obj->width();
+		  else
+		    $$ = 0.0;
+		}
+	| place DOT_RAD
+		{
+		  if ($1.obj != 0)
+		    $$ = $1.obj->radius();
+		  else
+		    $$ = 0.0;
+		}
+	| expr '+' expr
+		{ $$ = $1 + $3; }
+	| expr '-' expr
+		{ $$ = $1 - $3; }
+	| expr '*' expr
+		{ $$ = $1 * $3; }
+	| expr '/' expr
+		{
+		  if ($3 == 0.0) {
+		    lex_error("division by zero");
+		    YYABORT;
+		  }
+		  $$ = $1/$3;
+		}
+	| expr '%' expr
+		{
+		  if ($3 == 0.0) {
+		    lex_error("modulus by zero");
+		    YYABORT;
+		  }
+		  $$ = fmod($1, $3);
+		}
+	| expr '^' expr
+		{
+		  errno = 0;
+		  $$ = pow($1, $3);
+		  if (errno == EDOM) {
+		    lex_error("arguments to `^' operator out of domain");
+		    YYABORT;
+		  }
+		  if (errno == ERANGE) {
+		    lex_error("result of `^' operator out of range");
+		    YYABORT;
+		  }
+		}
+	| '-' expr    %prec '!'
+		{ $$ = -$2; }
+	| '(' any_expr ')'
+		{ $$ = $2; }
+	| SIN '(' any_expr ')'
+		{
+		  errno = 0;
+		  $$ = sin($3);
+		  if (errno == ERANGE) {
+		    lex_error("sin result out of range");
+		    YYABORT;
+		  }
+		}
+	| COS '(' any_expr ')'
+		{
+		  errno = 0;
+		  $$ = cos($3);
+		  if (errno == ERANGE) {
+		    lex_error("cos result out of range");
+		    YYABORT;
+		  }
+		}
+	| ATAN2 '(' any_expr ',' any_expr ')'
+		{
+		  errno = 0;
+		  $$ = atan2($3, $5);
+		  if (errno == EDOM) {
+		    lex_error("atan2 argument out of domain");
+		    YYABORT;
+		  }
+		  if (errno == ERANGE) {
+		    lex_error("atan2 result out of range");
+		    YYABORT;
+		  }
+		}
+	| LOG '(' any_expr ')'
+		{
+		  errno = 0;
+		  $$ = log10($3);
+		  if (errno == ERANGE) {
+		    lex_error("log result out of range");
+		    YYABORT;
+		  }
+		}
+	| EXP '(' any_expr ')'
+		{
+		  errno = 0;
+		  $$ = pow(10.0, $3);
+		  if (errno == ERANGE) {
+		    lex_error("exp result out of range");
+		    YYABORT;
+		  }
+		}
+	| SQRT '(' any_expr ')'
+		{
+		  errno = 0;
+		  $$ = sqrt($3);
+		  if (errno == EDOM) {
+		    lex_error("sqrt argument out of domain");
+		    YYABORT;
+		  }
+		}
+	| K_MAX '(' any_expr ',' any_expr ')'
+		{ $$ = $3 > $5 ? $3 : $5; }
+	| K_MIN '(' any_expr ',' any_expr ')'
+		{ $$ = $3 < $5 ? $3 : $5; }
+	| INT '(' any_expr ')'
+		{ $$ = floor($3); }
+	| RAND '(' any_expr ')'
+		{ $$ = 1.0 + floor(((rand()&0x7fff)/double(0x7fff))*$3); }
+	| RAND '(' ')'
+		{
+		  /* return a random number in the range [0,1) */
+		  /* portable, but not very random */
+		  $$ = (rand() & 0x7fff) / double(0x8000);
+		}
+	| expr '<' expr
+		{ $$ = ($1 < $3); }
+	| expr LESSEQUAL expr
+		{ $$ = ($1 <= $3); }
+	| expr '>' expr
+		{ $$ = ($1 > $3); }
+	| expr GREATEREQUAL expr
+		{ $$ = ($1 >= $3); }
+	| expr EQUALEQUAL expr
+		{ $$ = ($1 == $3); }
+	| expr NOTEQUAL expr
+		{ $$ = ($1 != $3); }
+	| expr ANDAND expr
+		{ $$ = ($1 != 0.0 && $3 != 0.0); }
+	| expr OROR expr
+		{ $$ = ($1 != 0.0 || $3 != 0.0); }
+	| '!' expr
+		{ $$ = ($2 == 0.0); }
+
+	;
+
+%%
+
+/* bison defines const to be empty unless __STDC__ is defined, which it
+isn't under cfront */
+
+#ifdef const
+#undef const
+#endif
+
+static struct {
+  const char *name;
+  double val;
+  int scaled;		     // non-zero if val should be multiplied by scale
+} defaults_table[] = {
+  { "arcrad", .25, 1 },
+  { "arrowht", .1, 1 },
+  { "arrowwid", .05, 1 },
+  { "circlerad", .25, 1 },
+  { "boxht", .5, 1 },
+  { "boxwid", .75, 1 },
+  { "boxrad", 0.0, 1 },
+  { "dashwid", .05, 1 },
+  { "ellipseht", .5, 1 },
+  { "ellipsewid", .75, 1 },
+  { "moveht", .5, 1 },
+  { "movewid", .5, 1 },
+  { "lineht", .5, 1 },
+  { "linewid", .5, 1 },
+  { "textht", 0.0, 1 },
+  { "textwid", 0.0, 1 },
+  { "scale", 1.0, 0 },
+  { "linethick", -1.0, 0 },		// in points
+  { "fillval", .5, 0 },
+  { "arrowhead", 1.0, 0 },
+  { "maxpswid", 8.5, 0 },
+  { "maxpsht", 11.0, 0 },
+};
+
+place *lookup_label(const char *label)
+{
+  saved_state *state = current_saved_state;
+  PTABLE(place) *tbl = current_table;
+  for (;;) {
+    place *pl = tbl->lookup(label);
+    if (pl)
+      return pl;
+    if (!state)
+      return 0;
+    tbl = state->tbl;
+    state = state->prev;
+  }
+}
+
+void define_label(const char *label, const place *pl)
+{
+  place *p = new place;
+  *p = *pl;
+  current_table->define(label, p);
+}
+
+int lookup_variable(const char *name, double *val)
+{
+  place *pl = lookup_label(name);
+  if (pl) {
+    *val = pl->x;
+    return 1;
+  }
+  return 0;
+}
+
+void define_variable(const char *name, double val)
+{
+  place *p = new place;
+  p->obj = 0;
+  p->x = val;
+  p->y = 0.0;
+  current_table->define(name, p);
+  if (strcmp(name, "scale") == 0) {
+    // When the scale changes, reset all scaled pre-defined variables to
+    // their default values.
+    for (int i = 0; i < sizeof(defaults_table)/sizeof(defaults_table[0]); i++) 
+      if (defaults_table[i].scaled)
+	define_variable(defaults_table[i].name, val*defaults_table[i].val);
+  }
+}
+
+// called once only (not once per parse)
+
+void parse_init()
+{
+  current_direction = RIGHT_DIRECTION;
+  current_position.x = 0.0;
+  current_position.y = 0.0;
+  // This resets everything to its default value.
+  reset_all();
+}
+
+void reset(const char *nm)
+{
+  for (int i = 0; i < sizeof(defaults_table)/sizeof(defaults_table[0]); i++)
+    if (strcmp(nm, defaults_table[i].name) == 0) {
+      double val = defaults_table[i].val;
+      if (defaults_table[i].scaled) {
+	double scale;
+	lookup_variable("scale", &scale);
+	val *= scale;
+      }
+      define_variable(defaults_table[i].name, val);
+      return;
+    }
+  lex_error("`%1' is not a predefined variable", nm);
+}
+
+void reset_all()
+{
+  // We only have to explicitly reset the pre-defined variables that
+  // aren't scaled because `scale' is not scaled, and changing the
+  // value of `scale' will reset all the pre-defined variables that
+  // are scaled.
+  for (int i = 0; i < sizeof(defaults_table)/sizeof(defaults_table[0]); i++)
+    if (!defaults_table[i].scaled)
+      define_variable(defaults_table[i].name, defaults_table[i].val);
+}
+
+// called after each parse
+
+void parse_cleanup()
+{
+  while (current_saved_state != 0) {
+    delete current_table;
+    current_table = current_saved_state->tbl;
+    saved_state *tem = current_saved_state;
+    current_saved_state = current_saved_state->prev;
+    delete tem;
+  }
+  assert(current_table == &top_table);
+  PTABLE_ITERATOR(place) iter(current_table);
+  const char *key;
+  place *pl;
+  while (iter.next(&key, &pl))
+    if (pl->obj != 0) {
+      position pos = pl->obj->origin();
+      pl->obj = 0;
+      pl->x = pos.x;
+      pl->y = pos.y;
+    }
+  while (olist.head != 0) {
+    object *tem = olist.head;
+    olist.head = olist.head->next;
+    delete tem;
+  }
+  olist.tail = 0;
+  current_direction = RIGHT_DIRECTION;
+  current_position.x = 0.0;
+  current_position.y = 0.0;
+}
+
+const char *ordinal_postfix(int n)
+{
+  if (n < 10 || n > 20)
+    switch (n % 10) {
+    case 1:
+      return "st";
+    case 2:
+      return "nd";
+    case 3:
+      return "rd";
+    }
+  return "th";
+}
+
+const char *object_type_name(object_type type)
+{
+  switch (type) {
+  case BOX_OBJECT:
+    return "box";
+  case CIRCLE_OBJECT:
+    return "circle";
+  case ELLIPSE_OBJECT:
+    return "ellipse";
+  case ARC_OBJECT:
+    return "arc";
+  case SPLINE_OBJECT:
+    return "spline";
+  case LINE_OBJECT:
+    return "line";
+  case ARROW_OBJECT:
+    return "arrow";
+  case MOVE_OBJECT:
+    return "move";
+  case TEXT_OBJECT:
+    return "\"\"";
+  case BLOCK_OBJECT:
+    return "[]";
+  case OTHER_OBJECT:
+  case MARK_OBJECT:
+  default:
+    break;
+  }
+  return "object";
+}
+
+static char sprintf_buf[1024];
+
+char *format_number(const char *form, double n)
+{
+  if (form == 0)
+    form = "%g";
+  else {
+    // this is a fairly feeble attempt at validation of the format
+    int nspecs = 0;
+    for (const char *p = form; *p != '\0'; p++)
+      if (*p == '%') {
+	if (p[1] == '%')
+	  p++;
+	else
+	  nspecs++;
+      }
+    if (nspecs > 1) {
+      lex_error("bad format `%1'", form);
+      return strsave(form);
+    }
+  }
+  sprintf(sprintf_buf, form, n);
+  return strsave(sprintf_buf);
+}
+
+char *do_sprintf(const char *form, const double *v, int nv)
+{
+  string result;
+  int i = 0;
+  string one_format;
+  while (*form) {
+    if (*form == '%') {
+      one_format += *form++;
+      for (; *form != '\0' && strchr("#-+ 0123456789.", *form) != 0; form++)
+	one_format += *form;
+      if (*form == '\0' || strchr("eEfgG%", *form) == 0) {
+	lex_error("bad sprintf format");
+	result += one_format;
+	result += form;
+	break;
+      }
+      if (*form == '%') {
+	one_format += *form++;
+	one_format += '\0';
+	sprintf(sprintf_buf, one_format.contents());
+      }
+      else {
+	if (i >= nv) {
+	  lex_error("too few arguments to sprintf");
+	  result += one_format;
+	  result += form;
+	  break;
+	}
+	one_format += *form++;
+	one_format += '\0';
+	sprintf(sprintf_buf, one_format.contents(), v[i++]);
+      }
+      one_format.clear();
+      result += sprintf_buf;
+    }
+    else
+      result += *form++;
+  }
+  result += '\0';
+  return strsave(result.contents());
+}
diff --git a/contrib/groff/pic/position.h b/contrib/groff/pic/position.h
new file mode 100644
index 000000000000..ab7d5469c006
--- /dev/null
+++ b/contrib/groff/pic/position.h
@@ -0,0 +1,47 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+struct place;
+struct position {
+  double x;
+  double y;
+  position(double, double );
+  position();
+  position(const place &);
+  position &operator+=(const position &);
+  position &operator-=(const position &);
+  position &operator*=(double);
+  position &operator/=(double);
+};
+
+position operator-(const position &);
+position operator+(const position &, const position &);
+position operator-(const position &, const position &);
+position operator/(const position &, double);
+position operator*(const position &, double);
+// dot product
+double operator*(const position &, const position &);
+int operator==(const position &, const position &);
+int operator!=(const position &, const position &);
+
+double hypot(const position &a);
+
+typedef position distance;
+
diff --git a/contrib/groff/pic/tex.cc b/contrib/groff/pic/tex.cc
new file mode 100644
index 000000000000..531078260922
--- /dev/null
+++ b/contrib/groff/pic/tex.cc
@@ -0,0 +1,411 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "pic.h"
+
+#ifdef TEX_SUPPORT
+
+#include "common.h"
+
+class tex_output : public common_output {
+public:
+  tex_output();
+  ~tex_output();
+  void start_picture(double, const position &ll, const position &ur);
+  void finish_picture();
+  void text(const position &, text_piece *, int, double);
+  void line(const position &, const position *, int n,
+	    const line_type &);
+  void polygon(const position *, int n,
+	       const line_type &, double);
+  void spline(const position &, const position *, int n,
+	      const line_type &);
+  void arc(const position &, const position &, const position &,
+	   const line_type &);
+  void circle(const position &, double rad, const line_type &, double);
+  void ellipse(const position &, const distance &, const line_type &, double);
+  void command(const char *, const char *, int);
+  int supports_filled_polygons();
+private:
+  position upper_left;
+  double height;
+  double width;
+  double scale;
+  double pen_size;
+
+  void point(const position &);
+  void dot(const position &, const line_type &);
+  void solid_arc(const position &cent, double rad, double start_angle,
+		 double end_angle, const line_type &lt);
+  position transform(const position &);
+protected:
+  virtual void set_pen_size(double ps);
+};
+
+// convert inches to milliinches
+
+inline int milliinches(double x)
+{
+  return int(x*1000.0 + .5);
+}
+
+inline position tex_output::transform(const position &pos)
+{
+  return position((pos.x - upper_left.x)/scale,
+		  (upper_left.y - pos.y)/scale);
+}
+
+output *make_tex_output()
+{
+  return new tex_output;
+}
+
+tex_output::tex_output()
+{
+}
+
+tex_output::~tex_output()
+{
+}
+
+const int DEFAULT_PEN_SIZE = 8;
+
+void tex_output::set_pen_size(double ps)
+{
+  if (ps < 0.0)
+    ps = -1.0;
+  if (ps != pen_size) {
+    pen_size = ps;
+    printf("    \\special{pn %d}%%\n", 
+	   ps < 0.0 ? DEFAULT_PEN_SIZE : int(ps*(1000.0/72.0) + .5));
+  }
+}
+
+void tex_output::start_picture(double sc, const position &ll,
+			       const position &ur)
+{
+  upper_left.x = ll.x;
+  upper_left.y = ur.y;
+  scale = compute_scale(sc, ll, ur);
+  height = (ur.y - ll.y)/scale;
+  width = (ur.x - ll.x)/scale;
+  /* the point of \vskip 0pt is to ensure that the vtop gets
+    a height of 0 rather than the height of the hbox; this
+    might be non-zero if text from text attributes lies outside pic's
+    idea of the bounding box of the picture. */
+  fputs("\\expandafter\\ifx\\csname graph\\endcsname\\relax \\csname newbox\\endcsname\\graph\\fi\n"
+	"\\expandafter\\ifx\\csname graphtemp\\endcsname\\relax \\csname newdimen\\endcsname\\graphtemp\\fi\n"
+	"\\setbox\\graph=\\vtop{\\vskip 0pt\\hbox{%\n",
+	stdout);
+  pen_size = -2.0;
+}
+
+void tex_output::finish_picture()
+{
+  printf("    \\hbox{\\vrule depth%.3fin width0pt height 0pt}%%\n"
+	 "    \\kern %.3fin\n"
+	 "  }%%\n"
+	 "}%%\n",
+	 height, width);
+}
+
+void tex_output::text(const position &center, text_piece *v, int n, double)
+{
+  position c = transform(center);
+  for (int i = 0; i < n; i++)
+    if (v[i].text != 0 && *v[i].text != '\0') {
+      int j = 2*i - n + 1;
+      if (v[i].adj.v == ABOVE_ADJUST)
+	j--;
+      else if (v[i].adj.v == BELOW_ADJUST)
+	j++;
+      if (j == 0) {
+	printf("    \\graphtemp=.5ex\\advance\\graphtemp by %.3fin\n", c.y);
+      }
+      else {
+	printf("    \\graphtemp=\\baselineskip"
+	       "\\multiply\\graphtemp by %d"
+	       "\\divide\\graphtemp by 2\n"
+	       "    \\advance\\graphtemp by .5ex"
+	       "\\advance\\graphtemp by %.3fin\n",
+	       j, c.y);
+      }
+      printf("    \\rlap{\\kern %.3fin\\lower\\graphtemp", c.x);
+      fputs("\\hbox to 0pt{", stdout);
+      if (v[i].adj.h != LEFT_ADJUST)
+	fputs("\\hss ", stdout);
+      fputs(v[i].text, stdout);
+      if (v[i].adj.h != RIGHT_ADJUST)
+	fputs("\\hss", stdout);
+      fputs("}}%\n", stdout);
+    }
+}
+
+void tex_output::point(const position &pos)
+{
+  position p = transform(pos);
+  printf("    \\special{pa %d %d}%%\n", milliinches(p.x), milliinches(p.y));
+}
+
+void tex_output::line(const position &start, const position *v, int n,
+		      const line_type &lt)
+{
+  set_pen_size(lt.thickness);
+  point(start);
+  for (int i = 0; i < n; i++)
+    point(v[i]);
+  fputs("    \\special{", stdout);
+  switch(lt.type) {
+  case line_type::invisible:
+    fputs("ip", stdout);
+    break;
+  case line_type::solid:
+    fputs("fp", stdout);
+    break;
+  case line_type::dotted:
+    printf("dt %.3f", lt.dash_width/scale);
+    break;
+  case line_type::dashed:
+    printf("da %.3f", lt.dash_width/scale);
+    break;
+  }
+  fputs("}%\n", stdout);
+}
+
+void tex_output::polygon(const position *v, int n,
+			 const line_type &lt, double fill)
+{
+  if (fill >= 0.0) {
+    if (fill > 1.0)
+      fill = 1.0;
+    printf("    \\special{sh %.3f}%%\n", fill);
+  }
+  line(v[n-1], v, n, lt);
+}
+
+void tex_output::spline(const position &start, const position *v, int n,
+			const line_type &lt)
+{
+  if (lt.type == line_type::invisible)
+    return;
+  set_pen_size(lt.thickness);
+  point(start);
+  for (int i = 0; i < n; i++)
+    point(v[i]);
+  fputs("    \\special{sp", stdout);
+  switch(lt.type) {
+  case line_type::solid:
+    break;
+  case line_type::dotted:
+    printf(" %.3f", -lt.dash_width/scale);
+    break;
+  case line_type::dashed:
+    printf(" %.3f", lt.dash_width/scale);
+    break;
+  case line_type::invisible:
+    assert(0);
+  }
+  fputs("}%\n", stdout);
+}
+
+void tex_output::solid_arc(const position &cent, double rad,
+			   double start_angle, double end_angle,
+			   const line_type &lt)
+{
+  set_pen_size(lt.thickness);
+  position c = transform(cent);
+  printf("    \\special{ar %d %d %d %d %f %f}%%\n",
+	 milliinches(c.x),
+	 milliinches(c.y),
+	 milliinches(rad/scale),
+	 milliinches(rad/scale),
+	 -end_angle,
+	 (-end_angle > -start_angle) ? M_PI * 2 - start_angle : -start_angle);
+}
+  
+void tex_output::arc(const position &start, const position &cent,
+		     const position &end, const line_type &lt)
+{
+  switch (lt.type) {
+  case line_type::invisible:
+    break;
+  case line_type::dashed:
+    dashed_arc(start, cent, end, lt);
+    break;
+  case line_type::dotted:
+    dotted_arc(start, cent, end, lt);
+    break;
+  case line_type::solid:
+    {
+      position c;
+      if (!compute_arc_center(start, cent, end, &c)) {
+	line(start, &end, 1, lt);
+	break;
+      }
+      solid_arc(c,
+		hypot(cent - start),
+		atan2(start.y - c.y, start.x - c.x),
+		atan2(end.y - c.y, end.x - c.x),
+		lt);
+      break;
+    }
+  }
+}
+
+void tex_output::circle(const position &cent, double rad,
+			const line_type &lt, double fill)
+{
+  if (fill >= 0.0 && lt.type != line_type::solid) {
+    if (fill > 1.0)
+      fill = 1.0;
+    line_type ilt;
+    ilt.type = line_type::invisible;
+    ellipse(cent, position(rad*2.0, rad*2.0), ilt, fill);
+  }
+  switch (lt.type) {
+  case line_type::dashed:
+    dashed_circle(cent, rad, lt);
+    break;
+  case line_type::invisible:
+    break;
+  case line_type::solid:
+    ellipse(cent, position(rad*2.0,rad*2.0), lt, fill);
+    break;
+  case line_type::dotted:
+    dotted_circle(cent, rad, lt);
+    break;
+  default:
+    assert(0);
+  }
+}
+
+void tex_output::ellipse(const position &cent, const distance &dim,
+			 const line_type &lt, double fill)
+{
+  if (lt.type == line_type::invisible) {
+    if (fill < 0.0)
+      return;
+  }
+  else
+    set_pen_size(lt.thickness);
+  if (fill >= 0.0) {
+    if (fill > 1.0)
+      fill = 1.0;
+    printf("    \\special{sh %.3f}%%\n", fill);
+  }
+  position c = transform(cent);
+  printf("    \\special{%s %d %d %d %d 0 6.28319}%%\n",
+	 (lt.type == line_type::invisible ? "ia" : "ar"),
+	 milliinches(c.x),
+	 milliinches(c.y),
+	 milliinches(dim.x/(2.0*scale)),
+	 milliinches(dim.y/(2.0*scale)));
+}
+
+void tex_output::command(const char *s, const char *, int)
+{
+  fputs(s, stdout);
+  putchar('%');			// avoid unwanted spaces
+  putchar('\n');
+}
+
+int tex_output::supports_filled_polygons()
+{
+  return 1;
+}
+
+void tex_output::dot(const position &pos, const line_type &lt)
+{
+  if (zero_length_line_flag) {
+    line_type slt = lt;
+    slt.type = line_type::solid;
+    line(pos, &pos, 1, slt);
+  }
+  else {
+    int dot_rad = int(lt.thickness*(1000.0/(72.0*2)) + .5);
+    if (dot_rad == 0)
+      dot_rad = 1;
+    position p = transform(pos);
+    printf("    \\special{sh 1}%%\n"
+	   "    \\special{ia %d %d %d %d 0 6.28319}%%\n",
+	   milliinches(p.x), milliinches(p.y), dot_rad, dot_rad);
+  }
+}
+
+class tpic_output : public tex_output {
+public:
+  tpic_output();
+  void command(const char *, const char *, int);
+private:
+  void set_pen_size(double ps);
+  int default_pen_size;
+  int prev_default_pen_size;
+};
+
+tpic_output::tpic_output()
+: default_pen_size(DEFAULT_PEN_SIZE), prev_default_pen_size(DEFAULT_PEN_SIZE)
+{
+}
+
+void tpic_output::command(const char *s, const char *filename, int lineno)
+{
+  assert(s[0] == '.');
+  if (s[1] == 'p' && s[2] == 's' && (s[3] == '\0' || !csalpha(s[3]))) {
+    const char *p = s + 3;
+    while (csspace(*p))
+      p++;
+    if (*p == '\0') {
+      int temp = default_pen_size;
+      default_pen_size = prev_default_pen_size;
+      prev_default_pen_size = temp;
+    }
+    else {
+      char *ptr;
+      int temp = (int)strtol(p, &ptr, 10);
+      if (temp == 0 && ptr == p)
+	error_with_file_and_line(filename, lineno,
+				 "argument to `.ps' not an integer");
+      else if (temp < 0)
+	error_with_file_and_line(filename, lineno,
+				 "negative pen size");
+      else {
+	prev_default_pen_size = default_pen_size;
+	default_pen_size = temp;
+      }
+    }
+  }
+  else
+    printf("\\%s%%\n", s + 1);
+}
+
+void tpic_output::set_pen_size(double ps)
+{
+  if (ps < 0.0)
+    printf("    \\special{pn %d}%%\n", default_pen_size);
+  else
+    tex_output::set_pen_size(ps);
+}
+
+output *make_tpic_output()
+{
+  return new tpic_output;
+}
+ 
+#endif
diff --git a/contrib/groff/pic/text.h b/contrib/groff/pic/text.h
new file mode 100644
index 000000000000..f9d34875075f
--- /dev/null
+++ b/contrib/groff/pic/text.h
@@ -0,0 +1,28 @@
+// -*- C++ -*-
+
+enum hadjustment {
+  CENTER_ADJUST,
+  LEFT_ADJUST,
+  RIGHT_ADJUST
+  };
+
+enum vadjustment {
+  NONE_ADJUST,
+  ABOVE_ADJUST,
+  BELOW_ADJUST
+  };
+
+struct adjustment {
+  hadjustment h;
+  vadjustment v;
+};
+
+struct text_piece {
+  char *text;
+  adjustment adj;
+  const char *filename;
+  int lineno;
+
+  text_piece();
+  ~text_piece();
+};
diff --git a/contrib/groff/pic/troff.cc b/contrib/groff/pic/troff.cc
new file mode 100644
index 000000000000..71444cdbf7e2
--- /dev/null
+++ b/contrib/groff/pic/troff.cc
@@ -0,0 +1,500 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "pic.h"
+#include "common.h"
+
+
+const double RELATIVE_THICKNESS = -1.0;
+const double BAD_THICKNESS = -2.0;
+
+class simple_output : public common_output {
+  virtual void simple_line(const position &, const position &) = 0;
+  virtual void simple_spline(const position &, const position *, int n) = 0;
+  virtual void simple_arc(const position &, const position &,
+			  const position &) = 0;
+  virtual void simple_circle(int, const position &, double rad) = 0;
+  virtual void simple_ellipse(int, const position &, const distance &) = 0;
+  virtual void simple_polygon(int, const position *, int) = 0;
+  virtual void line_thickness(double) = 0;
+  virtual void set_fill(double) = 0;
+  void dot(const position &, const line_type &) = 0;
+public:
+  void start_picture(double sc, const position &ll, const position &ur) = 0;
+  void finish_picture() = 0;
+  void text(const position &, text_piece *, int, double) = 0;
+  void line(const position &, const position *, int n,
+	    const line_type &);
+  void polygon(const position *, int n,
+	       const line_type &, double);
+  void spline(const position &, const position *, int n,
+	      const line_type &);
+  void arc(const position &, const position &, const position &,
+	   const line_type &);
+  void circle(const position &, double rad, const line_type &, double);
+  void ellipse(const position &, const distance &, const line_type &, double);
+  int supports_filled_polygons();
+};
+
+int simple_output::supports_filled_polygons()
+{
+  return driver_extension_flag != 0;
+}
+
+void simple_output::arc(const position &start, const position &cent,
+			const position &end, const line_type &lt)
+{
+  switch (lt.type) {
+  case line_type::solid:
+    line_thickness(lt.thickness);
+    simple_arc(start, cent, end);
+    break;
+  case line_type::invisible:
+    break;
+  case line_type::dashed:
+    dashed_arc(start, cent, end, lt);
+    break;
+  case line_type::dotted:
+    dotted_arc(start, cent, end, lt);
+    break;
+  }
+}
+
+void simple_output::line(const position &start, const position *v, int n,
+			 const line_type &lt)
+{
+  position pos = start;
+  line_thickness(lt.thickness);
+  for (int i = 0; i < n; i++) {
+    switch (lt.type) {
+    case line_type::solid:
+      simple_line(pos, v[i]);
+      break;
+    case line_type::dotted:
+      {
+	distance vec(v[i] - pos);
+	double dist = hypot(vec);
+	int ndots = int(dist/lt.dash_width + .5);
+	if (ndots == 0)
+	  dot(pos, lt);
+	else {
+	  vec /= double(ndots);
+	  for (int j = 0; j <= ndots; j++)
+	    dot(pos + vec*j, lt);
+	}
+      }
+      break;
+    case line_type::dashed:
+      {
+	distance vec(v[i] - pos);
+	double dist = hypot(vec);
+	if (dist <= lt.dash_width*2.0)
+	  simple_line(pos, v[i]);
+	else {
+	  int ndashes = int((dist - lt.dash_width)/(lt.dash_width*2.0) + .5);
+	  distance dash_vec = vec*(lt.dash_width/dist);
+	  double dash_gap = (dist - lt.dash_width)/ndashes;
+	  distance dash_gap_vec = vec*(dash_gap/dist);
+	  for (int j = 0; j <= ndashes; j++) {
+	    position s(pos + dash_gap_vec*j);
+	    simple_line(s, s + dash_vec);
+	  }
+	}
+      }
+      break;
+    case line_type::invisible:
+      break;
+    default:
+      assert(0);
+    }
+    pos = v[i];
+  }
+}
+
+void simple_output::spline(const position &start, const position *v, int n,
+			   const line_type &lt)
+{
+  line_thickness(lt.thickness);
+  simple_spline(start, v, n);
+}
+
+void simple_output::polygon(const position *v, int n,
+			    const line_type &lt, double fill)
+{
+  if (driver_extension_flag) {
+    if (fill >= 0.0) {
+      set_fill(fill);
+      simple_polygon(1, v, n);
+    }
+  }
+  if (lt.type == line_type::solid && driver_extension_flag) {
+    line_thickness(lt.thickness);
+    simple_polygon(0, v, n);
+  }
+  else if (lt.type != line_type::invisible) {
+    line_thickness(lt.thickness);
+    line(v[n - 1], v, n, lt);
+  }
+}
+
+void simple_output::circle(const position &cent, double rad,
+			   const line_type &lt, double fill)
+{
+  if (driver_extension_flag && fill >= 0.0) {
+    set_fill(fill);
+    simple_circle(1, cent, rad);
+  }
+  line_thickness(lt.thickness);
+  switch (lt.type) {
+  case line_type::invisible:
+    break;
+  case line_type::dashed:
+    dashed_circle(cent, rad, lt);
+    break;
+  case line_type::dotted:
+    dotted_circle(cent, rad, lt);
+    break;
+  case line_type::solid:
+    simple_circle(0, cent, rad);
+    break;
+  default:
+    assert(0);
+  }
+}
+
+void simple_output::ellipse(const position &cent, const distance &dim,
+			    const line_type &lt, double fill)
+{
+  if (driver_extension_flag && fill >= 0.0) {
+    set_fill(fill);
+    simple_ellipse(1, cent, dim);
+  }
+  if (lt.type != line_type::invisible)
+    line_thickness(lt.thickness);
+  switch (lt.type) {
+  case line_type::invisible:
+    break;
+  case line_type::dotted:
+  case line_type::dashed:
+  case line_type::solid:
+    simple_ellipse(0, cent, dim);
+    break;
+  default:
+    assert(0);
+  }
+}
+
+#define FILL_MAX 1000
+
+class troff_output : public simple_output {
+  const char *last_filename;
+  position upper_left;
+  double height;
+  double scale;
+  double last_line_thickness;
+  double last_fill;
+public:
+  troff_output();
+  ~troff_output();
+  void start_picture(double, const position &ll, const position &ur);
+  void finish_picture();
+  void text(const position &, text_piece *, int, double);
+  void dot(const position &, const line_type &);
+  void command(const char *, const char *, int);
+  void set_location(const char *, int);
+  void simple_line(const position &, const position &);
+  void simple_spline(const position &, const position *, int n);
+  void simple_arc(const position &, const position &, const position &);
+  void simple_circle(int, const position &, double rad);
+  void simple_ellipse(int, const position &, const distance &);
+  void simple_polygon(int, const position *, int);
+  void line_thickness(double p);
+  void set_fill(double);
+  position transform(const position &);
+};
+
+output *make_troff_output()
+{
+  return new troff_output;
+}
+
+troff_output::troff_output()
+: last_filename(0), last_line_thickness(BAD_THICKNESS), last_fill(-1.0)
+{
+}
+
+troff_output::~troff_output()
+{
+}
+
+inline position troff_output::transform(const position &pos)
+{
+  return position((pos.x - upper_left.x)/scale,
+		  (upper_left.y - pos.y)/scale);
+}
+
+#define FILL_REG "00"
+
+// If this register > 0, then pic will generate \X'ps: ...' commands
+// if the aligned attribute is used.
+#define GROPS_REG "0p"
+
+// If this register is defined, geqn won't produce `\x's.
+#define EQN_NO_EXTRA_SPACE_REG "0x"
+
+void troff_output::start_picture(double sc,
+				 const position &ll, const position &ur)
+{
+  upper_left.x = ll.x;
+  upper_left.y = ur.y;
+  scale = compute_scale(sc, ll, ur);
+  height = (ur.y - ll.y)/scale;
+  double width = (ur.x - ll.x)/scale;
+  printf(".PS %.3fi %.3fi", height, width);
+  if (args)
+    printf(" %s\n", args);
+  else
+    putchar('\n');
+  printf(".\\\" %g %g %g %g\n", ll.x, ll.y, ur.x, ur.y);
+  printf(".\\\" %.3fi %.3fi %.3fi %.3fi\n", 0.0, height, width, 0.0);
+  printf(".nr " FILL_REG " \\n(.u\n.nf\n");
+  printf(".nr " EQN_NO_EXTRA_SPACE_REG " 1\n");
+  // This guarantees that if the picture is used in a diversion it will
+  // have the right width.
+  printf("\\h'%.3fi'\n.sp -1\n", width);
+}
+
+void troff_output::finish_picture()
+{
+  line_thickness(BAD_THICKNESS);
+  last_fill = -1.0;		// force it to be reset for each picture
+  if (!flyback_flag)
+    printf(".sp %.3fi+1\n", height);
+  printf(".if \\n(" FILL_REG " .fi\n");
+  printf(".br\n");
+  printf(".nr " EQN_NO_EXTRA_SPACE_REG " 0\n");
+  // this is a little gross
+  set_location(current_filename, current_lineno);
+  fputs(flyback_flag ? ".PF\n" : ".PE\n", stdout);
+}
+
+void troff_output::command(const char *s,
+			   const char *filename, int lineno)
+{
+  if (filename != 0)
+    set_location(filename, lineno);
+  fputs(s, stdout);
+  putchar('\n');
+}
+
+void troff_output::simple_circle(int filled, const position &cent, double rad)
+{
+  position c = transform(cent);
+  printf("\\h'%.3fi'"
+	 "\\v'%.3fi'"
+	 "\\D'%c%.3fi'"
+	 "\n.sp -1\n",
+	 c.x - rad/scale,
+	 c.y,
+	 (filled ? 'C' : 'c'),
+	 rad*2.0/scale);
+}
+
+void troff_output::simple_ellipse(int filled, const position &cent,
+				  const distance &dim)
+{
+  position c = transform(cent);
+  printf("\\h'%.3fi'"
+	 "\\v'%.3fi'"
+	 "\\D'%c%.3fi %.3fi'"
+	 "\n.sp -1\n",
+	 c.x - dim.x/(2.0*scale),
+	 c.y,
+	 (filled ? 'E' : 'e'),
+	 dim.x/scale, dim.y/scale);
+}
+
+void troff_output::simple_arc(const position &start, const distance &cent,
+			      const distance &end)
+{
+  position s = transform(start);
+  position c = transform(cent);
+  distance cv = c - s;
+  distance ev = transform(end) - c;
+  printf("\\h'%.3fi'"
+	 "\\v'%.3fi'"
+	 "\\D'a%.3fi %.3fi %.3fi %.3fi'"
+	 "\n.sp -1\n",
+	 s.x, s.y, cv.x, cv.y, ev.x, ev.y);
+}
+
+void troff_output::simple_line(const position &start, const position &end)
+{
+  position s = transform(start);
+  distance ev = transform(end) - s;
+  printf("\\h'%.3fi'"
+	 "\\v'%.3fi'"
+	 "\\D'l%.3fi %.3fi'"
+	 "\n.sp -1\n",
+	 s.x, s.y, ev.x, ev.y);
+}
+
+void troff_output::simple_spline(const position &start,
+				 const position *v, int n)
+{
+  position pos = transform(start);
+  printf("\\h'%.3fi'"
+	 "\\v'%.3fi'",
+	 pos.x, pos.y);
+  fputs("\\D'~", stdout);
+  for (int i = 0; i < n; i++) {
+    position temp = transform(v[i]);
+    distance d = temp - pos;
+    pos = temp;
+    if (i != 0)
+      putchar(' ');
+    printf("%.3fi %.3fi", d.x, d.y);
+  }
+  printf("'\n.sp -1\n");
+}
+
+// a solid polygon
+
+void troff_output::simple_polygon(int filled, const position *v, int n)
+{
+  position pos = transform(v[0]);
+  printf("\\h'%.3fi'"
+	 "\\v'%.3fi'",
+	 pos.x, pos.y);
+  printf("\\D'%c", (filled ? 'P' : 'p'));
+  for (int i = 1; i < n; i++) {
+    position temp = transform(v[i]);
+    distance d = temp - pos;
+    pos = temp;
+    if (i != 1)
+      putchar(' ');
+    printf("%.3fi %.3fi", d.x, d.y);
+  }
+  printf("'\n.sp -1\n");
+}
+
+const double TEXT_AXIS = 0.22;	// in ems
+
+static const char *choose_delimiter(const char *text)
+{
+  if (strchr(text, '\'') == 0)
+    return "'";
+  else
+    return "\\(ts";
+}
+
+void troff_output::text(const position &center, text_piece *v, int n,
+			double ang)
+{
+  line_thickness(BAD_THICKNESS); // the text might use lines (eg in equations)
+  int rotate_flag = 0;
+  if (driver_extension_flag && ang != 0.0) {
+    rotate_flag = 1;
+    position c = transform(center);
+    printf(".if \\n(" GROPS_REG " \\{\\\n"
+	   "\\h'%.3fi'"
+	   "\\v'%.3fi'"
+	   "\\X'ps: exec gsave currentpoint 2 copy translate %.4f rotate neg exch neg exch translate'"
+	   "\n.sp -1\n"
+	   ".\\}\n",
+	   c.x, c.y, -ang*180.0/M_PI);
+  }
+  for (int i = 0; i < n; i++)
+    if (v[i].text != 0 && *v[i].text != '\0') {
+      position c = transform(center);
+      if (v[i].filename != 0)
+	set_location(v[i].filename, v[i].lineno);
+      printf("\\h'%.3fi", c.x);
+      const char *delim = choose_delimiter(v[i].text);
+      if (v[i].adj.h == RIGHT_ADJUST)
+	printf("-\\w%s%s%su", delim, v[i].text, delim);
+      else if (v[i].adj.h != LEFT_ADJUST)
+	printf("-(\\w%s%s%su/2u)", delim, v[i].text, delim);
+      putchar('\'');
+      printf("\\v'%.3fi-(%dv/2u)+%dv+%.2fm",
+	     c.y,
+	     n - 1,
+	     i,
+	     TEXT_AXIS);
+      if (v[i].adj.v == ABOVE_ADJUST)
+	printf("-.5v");
+      else if (v[i].adj.v == BELOW_ADJUST)
+	printf("+.5v");
+      putchar('\'');
+      fputs(v[i].text, stdout);
+      fputs("\n.sp -1\n", stdout);
+    }
+  if (rotate_flag)
+    printf(".if '\\*(.T'ps' \\{\\\n"
+	   "\\X'ps: exec grestore'\n.sp -1\n"
+	   ".\\}\n");
+}
+
+void troff_output::line_thickness(double p)
+{
+  if (p < 0.0)
+    p = RELATIVE_THICKNESS;
+  if (driver_extension_flag && p != last_line_thickness) {
+    printf("\\D't %.3fp'\\h'%.3fp'\n.sp -1\n", p, -p);
+    last_line_thickness = p;
+  }
+}
+
+void troff_output::set_fill(double f)
+{
+  if (driver_extension_flag && f != last_fill) {
+    printf("\\D'f %du'\\h'%du'\n.sp -1\n", int(f*FILL_MAX), -int(f*FILL_MAX));
+    last_fill = f;
+  }
+}
+
+const double DOT_AXIS = .044;
+
+void troff_output::dot(const position &cent, const line_type &lt)
+{
+  if (driver_extension_flag) {
+    line_thickness(lt.thickness);
+    simple_line(cent, cent);
+  }
+  else {
+    position c = transform(cent);
+    printf("\\h'%.3fi-(\\w'.'u/2u)'"
+	   "\\v'%.3fi+%.2fm'"
+	   ".\n.sp -1\n",
+	   c.x,
+	   c.y, 
+	   DOT_AXIS);
+  }
+}
+
+void troff_output::set_location(const char *s, int n)
+{
+  if (last_filename != 0 && strcmp(s, last_filename) == 0)
+    printf(".lf %d\n", n);
+  else {
+    printf(".lf %d %s\n", n, s);
+    last_filename = s;
+  }
+}