From: utzoo!decvax!ucbvax!C70:editor-people
Newsgroups: fa.editor-p
Title: Re: Editor Flame
Article-I.D.: ucb.1232
Posted: Tue Jun  1 13:34:27 1982
Received: Wed Jun  2 03:00:45 1982

>From Greenberg.Symbolics@MIT-MULTICS Tue Jun  1 13:05:00 1982
Echo negotiation as designed and implemented on Multics resends
a bitmap of what of 128 characters are breaks at the first
call to echo-negotiatedly read after rebindings have been done.
Thus, switching buffers and modes back and forth in an extension
does not cause this to happen until it is time to actually read.
There is no more expense involved with making "A" a break character
than Carriage Return.  EVEN THE LISP-LEVEL EXTENSION WRITER is not
aware, and need not be, of echo-negotiation.