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New "docclean" target for makefile (removes glossary dependencies when
rebuilding documentation). Changes to .fs files and prim are restricted
to glossary (\G) additions for the documentation; this has necessitated
the addition of new white-space in places to stop the \G stuff from
obscuring the code. Many additions to doc/gforth.ds - new sections
added, a few things moved and some sections re-written slightly. There
are a set of things to tidy up before this rev. is suitable for
release, and those will be my highest priority. I have also used
"@comment TODO" to highlight other sections I plan to work on, and
added a set of comments at the start to indicate other things I plan
to modify in the medium-term.

\ VT100.STR     VT100 excape sequences                  20may93jaw

\ Copyright (C) 1995 Free Software Foundation, Inc.

\ This file is part of Gforth.

\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.

\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
\ GNU General Public License for more details.

\ You should have received a copy of the GNU General Public License
\ along with this program; if not, write to the Free Software
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

decimal

: pn    base @ swap decimal 0 u.r base ! ;
: ;pn   [char] ; emit pn ;
: ESC[  27 emit [char] [ emit ;

: at-xy ( u1 u2 -- ) \ facility at-x-y
  \G Position the cursor so that subsequent text output will
  \G take place at column u1, row u2 of the display. (column
  \G 0, row 0 is the top left-hand corner of the display).
  1+ swap 1+ swap ESC[ pn ;pn [char] H emit ;

: page ( -- ) \ gforth
  \G Clear the display and set the cursor to the top left-hand
  \G corner.
  ESC[ ." 2J" 0 0 at-xy ;