🚀 go-pugleaf

From: CBWP8008@IRUCCVAX.UCC.IE (Ian Murphy)

>> I don't think it's provided in standard modula, not to matter, what you have
>> to
>> do is to write an esc sequence (i.e <esc>something) the something will depend
>> on the terminal type you're using. I'd guess you're using vt100s so the best

In article <8905180953.AA13531@jade.berkeley.edu> Modula2 List <INFO-M2%UCF1VM.bitnet@jade.berkeley.edu> writes:

>Ian, We use modula-2 here in Trinity and we too tried to find a way to clear
>    the screen and return the cursor to the top of the
>screen. It apparently cannot be done. We use VT320 terminals and went to the
>   comp. lab. to get the manuels for the terminals.
>Having got them we frantically searched through it to find some sort of escape
>   sequence or ascii character to do it.
>The result is that it cannot be done!!!

You have to put the cursor at the top of the screen and then clear the
screen.  The reason is that the VT100's "clear" function only operates
from the current cursor position to the end of the screen.  The escape
codes are something like the following:

<ESC> [ 0 ; 0 H
<ESC> [ 2 J

>However if you use VMS on a Vax then typing the following will do it for you...
>        $ SET TERM/WIDTH=132
>        $ SET TERM/WIDTH=80

If you want to do it that way, there are escape codes for this too.  But
beware, some future generations of DEC terminals might not lose their
memory during such operations.

Meanwhile, it looks like you posted your news article with your terminal
set to 132, and some processor split them at 80.  I edited the excerpts
quoted above, to make them more readable.  Most of us use width-80
windows (or width-80 whatevers) to read news.  Please use it when
posting, too.

--
Norman Diamond, Sony Computer Science Lab (diamond%csl.sony.co.jp@relay.cs.net)
  The above opinions are my own.   |  Why are programmers criticized for
  If they're also your opinions,   |  re-implementing the wheel, when car
  you're infringing my copyright.  |  manufacturers are praised for it?