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From: <ackerman@ATHENA.MIT.EDU>
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To: Daniel I. Applebaum <danapple@FLOTSAM.MIT.EDU>
Cc: bgardner@ATHENA.MIT.EDU
In-Reply-To: Your message of Mon, 20 Mar 89 00:04:52 -0500.
             <8903200504.AA09048@FLOTSAM.MIT.EDU> 
Date: Tue, 21 Mar 89 14:17:39 EST

Are you sure about the movement?  You can move the image in the neuro
disk, and the backing store sticks.  I think.  I'd have to actually check.
Also, I've seen backing store with sections missing, which is what you
would get if the window were obscured.

					Ack