VT100 scrolling region

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Article #1350

#1350

From: Frank I. Reiter
Date: Fri, 18 Dec 1992 00:41

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Part of an application I am working on includes a VT100 emulator.  We thought
this was complete until today when one of our users began using it to telnet
into a VAX system where the default editor makes use of scrolling regions.

My understanding is that the code ESC [n1;n2r sets the scrolling region to
lines n1 through n2 inclusive, but there are two things I do not know:

1) Does ESC [;22r mean "scroll lines 0 through 22" or does it mean "Set the
bottom scrolling line to 22, leave the top line as it is set already" ?

2) Should a clear screen code clear the scrolling region only, or the entire
screen?  How about a clear to end of screen?

I will be ever so grateful if somebody could answer these questions for me.

Frank.
--
___________________________________________________________________
Frank I. Reiter                 Internet: Frank@mindlink.bc.ca
MIND LINK! Communications Corp. Surrey, British Columbia, Canada

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Newsgroups: comp.terminals
Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!agate!rsoft!mindlink!a2
From: Frank@mindlink.bc.ca (Frank I. Reiter)
Subject: VT100 scrolling region
Organization: MIND LINK! - British Columbia, Canada
Date: Fri, 18 Dec 1992 00:41:54 GMT
Message-ID: <18623@mindlink.bc.ca>
Sender: news@deep.rsoft.bc.ca (Usenet)
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