--- a/docs/ccguide/chdir.refentry	Sat Oct 05 16:53:43 2002 +0000
+++ b/docs/ccguide/chdir.refentry	Sun Oct 06 09:10:36 2002 +0000
@@ -9,15 +9,39 @@
 <funcsynopsis>
 <funcprototype>
   <funcdef><function>chdir</function></funcdef>
-  <paramdef>type <parameter>arg1</parameter></paramdef>
+  <paramdef>char *<parameter>dirname</parameter></paramdef>
+</funcprototype>
+
+<funcprototype>
+  <funcdef><function>cxdir</function></funcdef>
+  <paramdef>char *<parameter>dirname</parameter></paramdef>
 </funcprototype>
 </funcsynopsis>
 
 </refsynopsisdiv>
 
+<refsect1><title>Assembler Equivalent</title>
+<para>
+os9 I$CHGDIR
+</para>
+</refsect1>
 <refsect1><title>Description</title>
 <para>
-Placeholder
+These calls change the current data directory and the current
+execution directory, respectively, for the running task.
+"Dirname" is a pointer to a string that gives a pathname for
+a directory.
+</para>
+</refsect1>
+<refsect1><title>Diagnostics</title>
+<para>
+Each call returns 0 after a successful call, or -1 if "dirname"
+is not a directory path name, or it is not searchable.
+</para>
+</refsect1>
+<refsect1><title>See Also</title>
+<para>
+OS-9 shell commands "chd" and "chx".
 </para>
 </refsect1>
 </refentry>