--- gforth/vt100.fs	1995/11/07 18:07:04	1.2
+++ gforth/vt100.fs	2000/09/23 15:06:03	1.6
@@ -1,6 +1,6 @@
 \ VT100.STR     VT100 excape sequences                  20may93jaw
 
-\ Copyright (C) 1995 Free Software Foundation, Inc.
+\ Copyright (C) 1995,1999 Free Software Foundation, Inc.
 
 \ This file is part of Gforth.
 
@@ -23,6 +23,15 @@ decimal
 : pn    base @ swap decimal 0 u.r base ! ;
 : ;pn   [char] ; emit pn ;
 : ESC[  27 emit [char] [ emit ;
-: at-xy 1+ swap 1+ swap ESC[ pn ;pn [char] H emit ;
-: page  ESC[ ." 2J" 0 0 at-xy ;
+
+: at-xy ( u1 u2 -- ) \ facility at-x-y
+  \G Position the cursor so that subsequent text output will take
+  \G place at column @var{u1}, row @var{u2} of the display. (column 0,
+  \G row 0 is the top left-hand corner of the display).
+  1+ swap 1+ swap ESC[ pn ;pn [char] H emit ;
+
+: page ( -- ) \ facility
+  \G Clear the display and set the cursor to the top left-hand
+  \G corner.
+  ESC[ ." 2J" 0 0 at-xy ;