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diff --git a/contrib/lutok/examples/hello.cpp b/contrib/lutok/examples/hello.cpp
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+// Copyright 2012 Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+//   notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright
+//   notice, this list of conditions and the following disclaimer in the
+//   documentation and/or other materials provided with the distribution.
+// * Neither the name of Google Inc. nor the names of its contributors
+//   may be used to endorse or promote products derived from this software
+//   without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/// \file examples/hello.cpp
+/// Minimal example using Lua code to print a traditional hello-world message.
+
+#include <cstdlib>
+
+#include <lutok/state.ipp>
+
+
+/// Program's entry point.
+///
+/// \return A system exit code.
+int
+main(void)
+{
+    // Initializes a new Lua state.  Every Lua state is independent from each
+    // other.
+    lutok::state state;
+
+    // Loads the standard library into the Lua state.  Among many other
+    // functions, this gives us access to print(), which is used below.
+    state.open_base();
+
+    // Pushes the print() function into the Lua stack, then its only argument,
+    // and then proceeds to execute it within the Lua state.
+    state.get_global("print");
+    state.push_string("Hello, world!");
+    state.pcall(1, 0, 0);
+
+    return EXIT_SUCCESS;
+}