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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"/><title>1&nbsp;Running R5RS Programs</title><link rel="stylesheet" type="text/css" href="../scribble.css" title="default"/><link rel="stylesheet" type="text/css" href="../racket.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="../manual-racket.js"></script><script type="text/javascript" src="../doc-site.js"></script><script type="text/javascript" src="../local-redirect/local-redirect.js"></script><script type="text/javascript" src="../local-redirect/local-user-redirect.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"><div class="tocviewlist tocviewlisttopspace"><div class="tocviewtitle"><table cellspacing="0" cellpadding="0"><tr><td style="width: 1em;"><a href="javascript:void(0);" title="Expand/Collapse" class="tocviewtoggle" onclick="TocviewToggle(this,&quot;tocview_0&quot;);">&#9660;</a></td><td></td><td><a href="index.html" class="tocviewlink" data-pltdoc="x">R5RS:<span class="mywbr"> &nbsp;</span> Legacy Scheme</a></td></tr></table></div><div class="tocviewsublistonly" style="display: block;" id="tocview_0"><table cellspacing="0" cellpadding="0"><tr><td align="right">1&nbsp;</td><td><a href="" class="tocviewselflink" data-pltdoc="x">Running R<span style="vertical-align: super; font-size: 80%">5</span>RS Programs</a></td></tr><tr><td align="right">2&nbsp;</td><td><a href="plt-r5rs.html" class="tocviewlink" data-pltdoc="x"><span class="stt">plt-<wbr></wbr>r5rs</span></a></td></tr><tr><td align="right">3&nbsp;</td><td><a href="r5rs-mod.html" class="tocviewlink" data-pltdoc="x">R<span style="vertical-align: super; font-size: 80%">5</span>RS Module Language</a></td></tr><tr><td align="right">4&nbsp;</td><td><a href="r5rs_init-mod.html" class="tocviewlink" data-pltdoc="x">R<span style="vertical-align: super; font-size: 80%">5</span>RS Initialization Library</a></td></tr></table></div></div></div></div><div class="maincolumn"><div class="main"><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, &quot;6.7&quot;, &quot;../&quot;);" onfocus="this.style.color=&quot;black&quot;; this.style.textAlign=&quot;left&quot;; if (this.value == &quot;...search manuals...&quot;) this.value=&quot;&quot;;" onblur="if (this.value.match(/^ *$/)) { this.style.color=&quot;#888&quot;; this.style.textAlign=&quot;center&quot;; this.value=&quot;...search manuals...&quot;; }"/></form>&nbsp;&nbsp;<a href="../index.html" title="up to the documentation top" data-pltdoc="x" onclick="return GotoPLTRoot(&quot;6.7&quot;);">top</a></span><span class="navright">&nbsp;&nbsp;<a href="index.html" title="backward to &quot;R5RS: Legacy Scheme&quot;" data-pltdoc="x">&larr; prev</a>&nbsp;&nbsp;<a href="index.html" title="up to &quot;R5RS: Legacy Scheme&quot;" data-pltdoc="x">up</a>&nbsp;&nbsp;<a href="plt-r5rs.html" title="forward to &quot;2 plt-r5rs&quot;" data-pltdoc="x">next &rarr;</a></span>&nbsp;</div><h3 x-source-module="(lib &quot;r5rs/r5rs.scrbl&quot;)" x-source-pkg="r5rs-doc" x-part-tag="&quot;running&quot;">1<tt>&nbsp;</tt><a name="(part._running)"></a>Running R<span style="vertical-align: super; font-size: 80%">5</span>RS Programs</h3><p>Racket provides several layers of support for programs written
according to R<span style="vertical-align: super; font-size: 80%">5</span>RS:</p><ul><li><p>DrRacket provides an <span class="ssansserif">R5RS</span> language, which can be
selected via the <span class="ssansserif">Language|Choose Language...</span>
menu item. See <a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?tag=%28part._%28.%27%28lib._scribblings%2Fdrracket%2Fdrracket..scrbl%29.%27._.%27choose-language.%27%29%29&amp;version=6.7" class="Sq" data-pltdoc="x"><span class="ssansserif">Choose Language...</span></a> in
<a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?tag=%28part._%28.%27%28lib._scribblings%2Fdrracket%2Fdrracket..scrbl%29.%27._.%27top.%27%29%29&amp;version=6.7" class="Sq" data-pltdoc="x">the DrRacket
documentation</a> for more information.</p></li><li><p>The <span class="stt">plt-r5rs</span> executable runs an R<span style="vertical-align: super; font-size: 80%">5</span>RS program or
provides a read-eval-print loop for evaluating R<span style="vertical-align: super; font-size: 80%">5</span>RS
expressions and definitions. See <a href="plt-r5rs.html" data-pltdoc="x"><span class="stt">plt-r5rs</span></a> (later in
this manual) for more information.</p></li><li><p>The <a href="r5rs-mod.html" class="RktModLink" data-pltdoc="x"><span class="RktSym">r5rs</span></a> library implemented R<span style="vertical-align: super; font-size: 80%">5</span>RS procedures
and syntactic forms. It can also be used with <a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=guide&amp;rel=Module_Syntax.html%23%2528part._hash-lang%2529&amp;version=6.7" class="RktModLink Sq" data-pltdoc="x"><span class="RktMod">#lang</span></a> to
create a module whose body is implemented in an R<span style="vertical-align: super; font-size: 80%">5</span>RS-like
language.  See <a href="r5rs-mod.html" data-pltdoc="x">R<span style="vertical-align: super; font-size: 80%">5</span>RS Module Language</a> (later in this manual) for
more information.</p></li><li><p>The <a href="r5rs_init-mod.html" class="RktModLink" data-pltdoc="x"><span class="RktSym">r5rs/init</span></a> library extends
<a href="r5rs-mod.html" class="RktModLink" data-pltdoc="x"><span class="RktSym">r5rs</span></a> to set parameters (such as
case-insensitive symbol reading) for R<span style="vertical-align: super; font-size: 80%">5</span>RS loading or an
R<span style="vertical-align: super; font-size: 80%">5</span>RS read-eval-print loop. See <a href="r5rs_init-mod.html" data-pltdoc="x">R<span style="vertical-align: super; font-size: 80%">5</span>RS Initialization Library</a>
(later in this manual) for more information.</p></li></ul><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, &quot;6.7&quot;, &quot;../&quot;);" onfocus="this.style.color=&quot;black&quot;; this.style.textAlign=&quot;left&quot;; if (this.value == &quot;...search manuals...&quot;) this.value=&quot;&quot;;" onblur="if (this.value.match(/^ *$/)) { this.style.color=&quot;#888&quot;; this.style.textAlign=&quot;center&quot;; this.value=&quot;...search manuals...&quot;; }"/></form>&nbsp;&nbsp;<a href="../index.html" title="up to the documentation top" data-pltdoc="x" onclick="return GotoPLTRoot(&quot;6.7&quot;);">top</a></span><span class="navright">&nbsp;&nbsp;<a href="index.html" title="backward to &quot;R5RS: Legacy Scheme&quot;" data-pltdoc="x">&larr; prev</a>&nbsp;&nbsp;<a href="index.html" title="up to &quot;R5RS: Legacy Scheme&quot;" data-pltdoc="x">up</a>&nbsp;&nbsp;<a href="plt-r5rs.html" title="forward to &quot;2 plt-r5rs&quot;" data-pltdoc="x">next &rarr;</a></span>&nbsp;</div></div></div><div id="contextindicator">&nbsp;</div></body></html>