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+<html lang="en">
+<head>
+<title>Identifiers - Sketch</title>
+<meta http-equiv="Content-Type" content="text/html">
+<meta name="description" content="Sketch">
+<meta name="generator" content="makeinfo 4.7">
+<link title="Top" rel="start" href="index.html#Top">
+<link rel="up" href="Language-basics.html#Language-basics" title="Language basics">
+<link rel="prev" href="Language-basics.html#Language-basics" title="Language basics">
+<link rel="next" href="Key-and-reserved-words.html#Key-and-reserved-words" title="Key and reserved words">
+<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
+<!--
+Copyright (C) 2005, 2006, 2007, 2008 Eugene K. Ressler.
+
+This manual is for `sketch', version 0.2 (build 131),
+Saturday, August 09, 2008, a program that converts descriptions of simple
+three-dimensional scenes into static drawings. This version generates
+`PSTricks' or `PGF/TikZ' code suitable for use with the
+TeX document processing system.
+
+`Sketch' 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 3, or (at your option)
+any later version.
+
+Sketch 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 `sketch'; see the file COPYING.txt. If not, see
+http://www.gnu.org/copyleft.-->
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+</head>
+<body>
+<div class="node">
+<p>
+<a name="Identifiers"></a>Next:&nbsp;<a rel="next" accesskey="n" href="Key-and-reserved-words.html#Key-and-reserved-words">Key and reserved words</a>,
+Previous:&nbsp;<a rel="previous" accesskey="p" href="Language-basics.html#Language-basics">Language basics</a>,
+Up:&nbsp;<a rel="up" accesskey="u" href="Language-basics.html#Language-basics">Language basics</a>
+<hr><br>
+</div>
+
+<!-- node-name, next, previous, up -->
+<h4 class="subsection">3.1.1 Identifiers</h4>
+
+<p>Identifiers in <code>sketch</code> are references to earlier-defined
+options, scalars, points, vectors, transforms, drawables, and tags.
+<a name="index-identifiers-170"></a>Definitions are explained in <a href="Definitions.html#Definitions">Definitions</a>.
+
+ <p>An identifier consists of a leading letter followed by letters,
+numbers and underscores. The last character may <em>not</em> be an
+underscore. Keywords cannot be used as identifiers, and reserved
+words ought to be avoided. See <a href="Key-and-reserved-words.html#Key-and-reserved-words">Key and reserved words</a>.
+
+ </body></html>
+