1 files changed, 89 insertions, 0 deletions
diff --git a/docsrc/xlisp/xlisp-doc/reference/rplacd.htm b/docsrc/xlisp/xlisp-doc/reference/rplacd.htm
new file mode 100644
index 0000000..11b80c5
--- /dev/null
+++ b/docsrc/xlisp/xlisp-doc/reference/rplacd.htm
@@ -0,0 +1,89 @@
+<html><head><title>XLISP rplacd</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>rplacd</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>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>xllist.c</nobr></td>
+</tr>
+</tbody></table></p>
+
+<h2>Syntax</h2>
+
+<dl>
+<dt>(rplacd list expr)</dt>
+<dd><i>list</i> - the list to destructively modify<br>
+<i>expr</i> - the expression to replace the
+<a href="cdr.htm">cdr</a> of <i>list</i><br>
+returns - the list node after updating the
+<a href="cdr.htm">cdr</a></dd>
+</dl>
+
+<h2>Description</h2>
+
+<p>The 'rplacd' function destructively modifies the
+<a href="cdr.htm">cdr</a> of 'list' and replaces it with the
+'expr'. The destructive aspect of this operation means that the actual
+symbol value is used in the list-modifying operations, not a copy. 'list'
+must evaluate to a valid list.</p>
+
+<p>An atom or <a href="nil.htm">NIL</a> for 'list' will result in
+an error:</p>
+
+<pre class="example">
+<font color="#AA0000">error: bad argument type</font>
+</pre>
+
+<h2>Examples</h2>
+
+<pre class="example">
+(setq a '(1 2 3))          <font color="#008844">; set up A with (1 2 3)</font>
+(rplacd a 'new)            <font color="#008844">; returns (1 . NEW)</font>
+
+(print a)                  <font color="#008844">; prints (1 . NEW)</font>
+                           <font color="#008844">;   note that A is modified</font>
+
+(rplacd a '(a new list))   <font color="#008844">; returns (1 A NEW LIST)</font>
+(rplacd '(1 2 3) '(more))  <font color="#008844">; returns (1 MORE)</font>
+
+(rplacd 'a 'b)             <font color="#008844">; error: bad argument type</font>
+(rplacd NIL 'b)            <font color="#008844">; error: bad argument type</font>
+</pre>
+
+<p>See the
+<a href="../manual/xlisp-man-017.htm#rplacd">rplacd</a>
+function in the <nobr>XLISP 2.0</nobr> manual.</p>
+
+<p><nobr>&nbsp;&nbsp;<a href="#top">Back to Top</nobr></a></p>
+
+<hr>
+
+<a href="../start.htm">XLISP</a> &gt;
+<a href="../manual/xlisp-man-index.htm">XLISP 2.0</a>&nbsp; -&nbsp;
+<a href="../manual/contents.htm">Contents</a>&nbsp; -&nbsp;
+<a href="reference-index.htm">Reference</a>
+
+</body></html>
+\ No newline at end of file