Date: Mon, 25 Jun 2001 06:28:05 +0300
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: Jason Green <news AT jgreen4 DOT fsnet DOT co DOT uk>
Message-Id: <9003-Mon25Jun2001062804+0300-eliz@is.elta.co.il>
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CC: djgpp AT delorie DOT com
In-reply-to: <qrocjto14onfdk2ffs7avs375qbr60s2o5@4ax.com> (message from Jason
	Green on Sun, 24 Jun 2001 23:04:22 +0100)
Subject: Re: Info.
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> From: Jason Green <news AT jgreen4 DOT fsnet DOT co DOT uk>
> Newsgroups: comp.os.msdos.djgpp
> Date: Sun, 24 Jun 2001 23:04:22 +0100
> 
> Eli Zaretskii <eliz AT is DOT elta DOT co DOT il> wrote:
> 
> > > >Some DOS systems might have problems with the way Info switches the 
> > > >display to 40-line mode.  Try setting INFO_LINES=50 in the environment, 
> > > >before running Info, and see if that helps.
> > > 
> > > Why would that be?
> > 
> > Because some device drivers such as DISPLAY.SYS relocate the system fonts 
> > to high memory, and some versions of EMM386 have bugs when those high 
> > addresses are accessed.  When Info runs in 40-line mode, it generates its 
> > own font (because the system BIOS doesn't include a font suitable for 
> > 40-line display), and for that it needs to access the system font, 
> > because the generated font is created by tweaking the system font.
> 
> Out of interest, why *does* info insist on changing the video mode?

Only because djgpp.env says INFO_LINES=40.  If you remove that, or set
INFO_LINES=25 in the environment, Info won't switch the video mode.

I added INFO_LINES=40 to djgpp.env because IMHO 25 lines is too few to
be able to see a sufficiently large chunk of the document in one
screenful.