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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"/><title>Racket Documentation</title><link rel="stylesheet" type="text/css" href="scribble.css" title="default"/><link rel="stylesheet" type="text/css" href="root-info.css" title="default"/><link rel="stylesheet" type="text/css" href="manual-style.css" title="default"/><link rel="stylesheet" type="text/css" href="manual-racket.css" title="default"/><link rel="stylesheet" type="text/css" href="doc-site.css" title="default"/><script type="text/javascript" src="scribble-common.js"></script><script type="text/javascript" src="root-info.js"></script><script type="text/javascript" src="manual-racket.js"></script><script type="text/javascript" src="doc-site.js"></script><!--[if IE 6]><style type="text/css">.SIEHidden { overflow: hidden; }</style><![endif]--></head><body id="doc-racket-lang-org"><div class="tocset"><div class="tocview"><table class="tocsublist" cellspacing="0"><tr><td><a href="index.html" class="tocviewselflink" onclick="return GotoPLTRoot("6.1", "index.html");" data-pltdoc="x"><span class="tocsubseclink">Racket Documentation</span></a></td></tr><tr><td><a href="search/index.html" class="tocviewlink" onclick="return GotoPLTRoot("6.1", "search/index.html");" data-pltdoc="x"><span class="tocsubseclink">Search Manuals</span></a></td></tr><tr><td> </td></tr><tr><td><a href="license/index.html" class="tocviewlink" data-pltdoc="x"><span class="tocsubseclink">License</span></a></td></tr><tr><td><a href="acks/index.html" class="tocviewlink" data-pltdoc="x"><span class="tocsubseclink">Acknowledgements</span></a></td></tr><tr><td><a href="release/index.html" class="tocviewlink" onclick="return GotoPLTRoot("6.1", "release/index.html");" data-pltdoc="x"><span class="tocsubseclink">Release Notes</span></a></td></tr><tr><td> </td></tr><tr><td><a href="http://bugs.racket-lang.org/?v=6.1" class="tocviewlink" data-pltdoc="x"><span class="tocsubseclink">Report a Bug</span></a></td></tr></table></div></div><div class="maincolumn"><div class="main"><div class="versionbox"><span class="version">6.1</span></div><div class="navsettop"><span class="navleft"><form class="searchform"><input class="searchbox" style="color: #888;" type="text" value="...search manuals..." title="Enter a search string to search the manuals" onkeypress="return DoSearchKey(event, this, "6.1", "");" onfocus="this.style.color="black"; this.style.textAlign="left"; if (this.value == "...search manuals...") this.value="";" onblur="if (this.value.match(/^ *$/)) { this.style.color="#888"; this.style.textAlign="center"; this.value="...search manuals..."; }"/></form> </span> </div><h2 x-source-module="(lib "scribblings/main/start.scrbl")" x-part-tag=""top""><a name="(part._top)"></a><a name="(part._.Racket_.Documentation)"></a>Racket Documentation</h2><p><script type="text/javascript">
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</span></p></td></tr><tr><td><p><span class="hspace"> </span><a href="unstable-find/index.html" class="plainlink" data-pltdoc="x">Unstable Find: May Change Without Warning</a></p></td></tr><tr><td><p><span class="hspace"> </span><a href="unstable/index.html" class="plainlink" data-pltdoc="x">Unstable: May Change Without Warning</a></p></td></tr><tr><td><p><span class="hspace"> </span><a href="unstable-gui/index.html" class="plainlink" data-pltdoc="x">Unstable GUI: May Change Without Warning</a></p></td></tr><tr><td><p><span class="hspace"> </span><a href="unstable-flonum/index.html" class="plainlink" data-pltdoc="x">Unstable Flonums: May Change Without Warning</a></p></td></tr><tr><td><p><span class="hspace"> </span><a href="unstable-redex/index.html" class="plainlink" data-pltdoc="x">Unstable Redex: May Change Without Warning</a></p></td></tr><tr><td><p><span class="hspace"> </span></p></td></tr><tr><td><p>Legacy Languages and Libraries</p></td></tr><tr><td><p><span class="hspace"> 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Preprocessors</a></p></td></tr><tr><td><p><span class="hspace"> </span><a href="graphics/index.html" class="plainlink" data-pltdoc="x">Graphics: Legacy Library</a></p></td></tr><tr><td><p><span class="hspace"> </span><a href="mzlib/index.html" class="plainlink" data-pltdoc="x">MzLib: Legacy Libraries</a></p></td></tr></table><div class="navsetbottom"><span class="navleft"><form class="searchform"><input class="searchbox" style="color: #888;" type="text" value="...search manuals..." title="Enter a search string to search the manuals" onkeypress="return DoSearchKey(event, this, "6.1", "");" onfocus="this.style.color="black"; this.style.textAlign="left"; if (this.value == "...search manuals...") this.value="";" onblur="if (this.value.match(/^ *$/)) { this.style.color="#888"; this.style.textAlign="center"; this.value="...search manuals..."; }"/></form> </span> </div></div></div><div id="contextindicator"> </div></body></html>
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