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+<html><head><title>XLISP *applyhook*</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>*applyhook*</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>system variable</nobr></td>
+</tr>
+<tr valign="top">
+  <td><nobr>Source:</nobr></td>
+  <td><nobr>&nbsp;&nbsp;-&nbsp;&nbsp;</nobr></td>
+  <td width="100%"><nobr>xlglob.c (not implemented)</nobr></td>
+</tr>
+</tbody></table></p>
+
+<h2>Syntax</h2>
+
+<p><div class="box">
+
+<dl>
+<dt>&nbsp;*applyhook*</dt>
+</dl>
+
+</div></p>
+
+<h2>Description</h2>
+
+<p> *applyhook* is a system variable that exists and is initialized to
+<a href="nil.htm">NIL</a>. It is a hook that is intended to
+contain a user function that is to be called whenever a function is applied
+to a list of arguments. It is not, however, implemented in XLISP 2.0, it
+only exists as a dummy hook.</p>
+
+<h2>Examples</h2>
+
+<pre class="example">
+*applyhook*  =&gt; NIL
+</pre>
+
+<p>*applyhook* is often used to implement function stepping functionality in
+a debugger.</p>
+
+<p>See also:</p>
+
+<ul>
+<li><nobr><a href="../manual/contents.htm#symbols">Symbols</a></nobr></li>
+<li><nobr><a href="../manual/contents.htm#evaluation-functions">Evaluation 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