Path: utzoo!attcan!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.unix.questions
Subject: Re: How does man know?
Keywords: more, io redirection
Message-ID: <2538@auspex.auspex.com>
Date: 7 Oct 89 20:47:28 GMT
References: <319@massey.ac.nz> <11170@smoke.BRL.MIL> <592@crdos1.crd.ge.COM> <2772@crdgw1.crd.ge.com> <2281@munnari.oz.au> <713@ccssrv.UUCP>
Reply-To: guy@auspex.auspex.com (Guy Harris)
Organization: Auspex Systems, Santa Clara
Lines: 22

>I think this actually refers to the "Page Mode" of a "tty" window.

As he noted, it was.

>Strictly speaking, that is in Suntools rather than in SunOS itself,

Well, it depends on what you mean by "SunOS itself"; SunView is shipped
with SunOS, so it could conceivably be considered a part of SunOS.

>although there may be some kernel support involved.

None, other than the pseudo-ttys that make (user-mode) terminal
emulators like "shelltool" and "xterm" and the like possible.

>Unfortunately, the Suntools implementation is incomplete.  It works fine as
>long as the window is connected to a local process, but if I rlogin to
>another node it acts as if I had disabled page mode and I have to fall back
>on "more" or ^S/^Q (which do still work).

It turns Page Mode off when the tty driver goes into uncooked mode,
which "rlogin" does, as well as other programs like "vi".  I think the
intent is to avoid confusing programs that go into uncooked mode....