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+<html><head><title>XLISP characterp</title>
+
+<link rel="stylesheet" type="text/css" href="reference.css">
+
+</head>
+
+<body>
+
+<a href="../start.htm">Nyquist / XLISP 2.0</a>&nbsp; -&nbsp;
+<a href="../manual/contents.htm">Contents</a> |
+<a href="../tutorials/tutorials.htm">Tutorials</a> |
+<a href="../examples/examples.htm">Examples</a> |
+<a href="reference-index.htm">Reference</a>
+
+<hr>
+
+<h1>characterp</h1>
+
+<hr>
+
+<p><table cellpadding="0" cellspacing="0" style="margin-left:10px"><tbody>
+<tr valign="top">
+  <td><nobr>Type:</nobr></td>
+  <td><nobr>&nbsp;&nbsp;-&nbsp;&nbsp;</nobr></td>
+  <td width="100%"><nobr>predicate function (subr)</nobr></td>
+</tr>
+<tr valign="top">
+  <td><nobr>Source:</nobr></td>
+  <td><nobr>&nbsp;&nbsp;-&nbsp;&nbsp;</nobr></td>
+  <td width="100%"><nobr>xlbfun.c</nobr></td>
+</tr>
+</tbody></table></p>
+
+<h2>Syntax</h2>
+
+<p><div class="box">
+
+<dl>
+<dt>(<b>characterp</b> <i>expr</i>)</dt>
+<dd><i>expr</i> - the expression to check<br>
+returns - <a href="t.htm">&nbsp;T&nbsp;</a> if the value is a
+character, <a href="nil.htm">NIL</a> otherwise</dd>
+</dl>
+
+</div></p>
+
+<h2>Description</h2>
+
+<p>The 'characterp' predicate function tests if 'expr' evaluates to a
+character. <nobr><a href="t.htm">&nbsp;T&nbsp;</a> is</nobr> returned if
+'expr' evaluates to a character, <a href="nil.htm">NIL</a> is returned
+otherwise.</p>
+
+<h2>Examples</h2>
+
+<pre class="example">
+(characterp #\a)       =&gt; T    <font color="#008844">; character</font>
+(setq a #\b)           =&gt; #\b
+(characterp a)         =&gt; T    <font color="#008844">; evaluates to a character</font>
+(characterp "a")       =&gt; NIL  <font color="#008844">; string</font>
+(characterp '(a b c))  =&gt; NIL  <font color="#008844">; list</font>
+(characterp 1)         =&gt; NIL  <font color="#008844">; integer</font>
+(characterp 1.2)       =&gt; NIL  <font color="#008844">; float</font>
+(characterp 'a)        =&gt; NIL  <font color="#008844">; symbol</font>
+(characterp #(0 1 2))  =&gt; NIL  <font color="#008844">; array</font>
+(characterp nil)       =&gt; NIL  <font color="#008844">; NIL</font>
+</pre>
+
+<p>See also:</p>
+
+<ul>
+<li><nobr>Contents &rarr; <a href="../manual/contents.htm#predicate-functions">Predicate Functions</a></nobr></li>
+<li><nobr>Contents &rarr; <a href="../manual/contents.htm#character-functions">Character Functions</a></nobr></li>
+</ul>
+
+<p><nobr>&nbsp;&nbsp;<a href="#top">Back to Top</nobr></a></p>
+
+<hr>
+
+<a href="../start.htm">Nyquist / XLISP 2.0</a>&nbsp; -&nbsp;
+<a href="../manual/contents.htm">Contents</a> |
+<a href="../tutorials/tutorials.htm">Tutorials</a> |
+<a href="../examples/examples.htm">Examples</a> |
+<a href="reference-index.htm">Reference</a>
+
+</body></html>
+\ No newline at end of file