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+<html lang="en">
+<head>
+<title>Introduction by example - Sketch</title>
+<meta http-equiv="Content-Type" content="text/html">
+<meta name="description" content="Sketch">
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+<link title="Top" rel="start" href="index.html#Top">
+<link rel="prev" href="About-sketch.html#About-sketch" title="About sketch">
+<link rel="next" href="Input-language.html#Input-language" title="Input language">
+<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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+<div class="node">
+<p>
+<a name="Introduction-by-example"></a>Next:&nbsp;<a rel="next" accesskey="n" href="Input-language.html#Input-language">Input language</a>,
+Previous:&nbsp;<a rel="previous" accesskey="p" href="About-sketch.html#About-sketch">About sketch</a>,
+Up:&nbsp;<a rel="up" accesskey="u" href="index.html#Top">Top</a>
+<hr><br>
+</div>
+
+<!-- node-name, next, previous, up -->
+<h2 class="chapter">2 Introduction by example</h2>
+
+<p>The <code>sketch</code> input language will seem familiar to users of the
+<code>PSTricks</code> package for LaTeX. The following program draws a
+triangular polygon pierced by a line.
+<pre class="verbatim">
+ polygon(0,0,1)(1,0,0)(0,1,0)
+ line(-1,-1,-1)(2,2,2)
+</pre>
+The coordinate system
+<a name="index-coordinate-system_002c-right_002dhanded-3"></a><a name="index-right_002dhand-coordinate-system-4"></a>is a standard right-handed Cartesian one.
+
+<div align="center"><img src="ex010.png" alt="ex010.png"></div>
+
+<ul class="menu">
+<li><a accesskey="1" href="Hello-world.html#Hello-world">Hello world</a>: Simplest possible <code>sketch</code> program.
+<li><a accesskey="2" href="Drawing-options.html#Drawing-options">Drawing options</a>: Controlling object appearance.
+<li><a accesskey="3" href="Drawing-a-solid.html#Drawing-a-solid">Drawing a solid</a>: Drawing an object with 3d appearance.
+<li><a accesskey="4" href="Special-objects.html#Special-objects">Special objects</a>: Laying TeX over, in, or under drawings.
+<li><a accesskey="5" href="Object-transforms.html#Object-transforms">Object transforms</a>: Rotate, translate, scale, and others.
+<li><a accesskey="6" href="Repeated-objects.html#Repeated-objects">Repeated objects</a>: Making transformed copies.
+<li><a accesskey="7" href="Swept-objects.html#Swept-objects">Swept objects</a>: Sweeping objects in space to make new shapes.
+</ul>
+
+ </body></html>
+