diff --git a/doc/html/ncurses-intro.html b/doc/html/ncurses-intro.html
index 451e7ab..a6cd40c 100644
--- a/doc/html/ncurses-intro.html
+++ b/doc/html/ncurses-intro.html
@@ -1,8 +1,8 @@
-<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3.0//EN">
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
 <!--
-  $Id: ncurses-intro.html,v 1.43 2007/03/03 19:31:50 tom Exp $
+  $Id: ncurses-intro.html,v 1.46 2013/05/17 23:29:27 tom Exp $
   ****************************************************************************
-  * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc.              *
+  * Copyright (c) 1998-2012,2013 Free Software Foundation, Inc.              *
   *                                                                          *
   * Permission is hereby granted, free of charge, to any person obtaining a  *
   * copy of this software and associated documentation files (the            *
@@ -431,6 +431,7 @@
 Here is a sample program to motivate the discussion:
 
 <PRE>
+#include &lt;stdlib.h&gt;
 #include &lt;curses.h&gt;
 #include &lt;signal.h&gt;