-Except for \fBmenu_userptr\fR (which returns \fBNULL\fR on error), each
-function returns one of the following:
-.TP 5
-\fBE_OK\fR
-The routine succeeded.
-.TP 5
-\fBE_SYSTEM_ERROR\fR
-System error occurred (see \fBerrno\fR).
+\fBmenu_userptr\fR returns a pointer (which may be \fBNULL\fR).
+It does not set errno.
+.PP
+\fBset_menu_userptr\fP returns \fBE_OK\fP (success).