Path: utzoo!utgpu!water!watmath!clyde!rutgers!ames!pasteur!ucbvax!LF-SERVER-2.BBN.COM!jr
From: jr@LF-SERVER-2.BBN.COM (John Robinson)
Newsgroups: comp.emacs
Subject: Re: Reading usenet inside Emacs
Message-ID: <8801260210.AA21081@ucbvax.Berkeley.EDU>
Date: 25 Jan 88 20:59:56 GMT
References: <149@mccc.UUCP>
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: jr@BBN.COM
Organization: The Internet
Lines: 32

>> What's this ^H stuff for Emacs?  Are you talking about the
>> metacharacter, M- ???  Or what?  Or is this microGNU stuff???

It is GNU emacs that is being describes.  Here's the scoop:

 set-selective-display	      C-x $
   Function: Set selective-display to ARG; clear it if no arg.

 set-selective-display:
 Set selective-display to ARG; clear it if no arg.
 When selective-display is a number > 0,
 lines whose indentation is >= selective-display are not displayed.
 selective-display's value is separate for each buffer.

 selective-display's value is nil

 Documentation:
 t enables selective display:
  after a ^M, all the rest of the line is invisible.
  ^M's in the file are written into files as newlines.
 Integer n as value means display only lines
  that start with less than n columns of space.
 Automatically becomes local when set in any fashion.

^M is a literal carriage-return character. otherwise known as
control-M.  Line breaks are signalled by a new-line character, which
happens to be ^J, or linefeed.  Try setting selective-display in a
buffer and inserting (with ^Q^M) control-M characters and see what
happens.

/jr
jr@bbn.com or jr@bbn.uucp