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    Date: 18 September 1980 15:28-EDT
    From: Alan Bawden <ALAN at MIT-MC>
    .  .  .
    The "feature" isn't much of a feature since:
    1) SUBLIS isn't careful to not remove SUBLIS properties that it didn't put there.
    2) It only works to put a SUBLIS property on the front of the property list.
    3) It doesn't work to say (sublis nil ...).  (It doesn't look at ANY properties
	in that case.)
I think you misread my previous reply - I mentioned only that at one time 
(i.e. prior to about 1972) this had been intended to be a feature; that 
intention was never carried out.