Path: utzoo!attcan!uunet!husc6!bloom-beacon!ZERMATT.LCS.MIT.EDU!RWS
From: RWS@ZERMATT.LCS.MIT.EDU (Robert Scheifler)
Newsgroups: comp.windows.x
Subject: Re: backing store
Message-ID: <19880705200523.3.RWS@KILLINGTON.LCS.MIT.EDU>
Date: 5 Jul 88 20:05:00 GMT
References: <8807051918.AA21487@hpfcjrd.sde.hp.com>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 10

It was a basic tenet of the X design that all clients must know how to
repaint themselves.  A corollary was that clients should not depend on
backing-store.  It is quite possible that a paint application would
perform better if there was some way to tell the server "if you can give
me backing-store, you must guarantee never to take it away" and to query
if it gave it to you.  (Although a paint program that relied completely
on screen contents would be a pretty fragile thing.)  I don't know how
many other such clients there are.  If you feel strongly about such
support, you are encouraged to write up a proposal, and work through
your X Consortium representatives to get it adopted.