+</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+ The function <STRONG>menu_pattern</STRONG> returns a pointer, which is <STRONG>NULL</STRONG> if the <EM>menu</EM>
+ parameter is <STRONG>NULL</STRONG>. Otherwise, it is a pointer to a string which is
+ empty if no pattern has been set. It does not set <STRONG>errno</STRONG>.
+
+ The function <STRONG>set_menu_pattern</STRONG> may return the following error codes: