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    Date: 5 SEP 1979 0548-EDT
    From: KMP at MIT-MC (Kent M. Pitman)

    It would be nice to see the # macro accept "^" after it to mean controlify
    (ie, (LOGAND <frob> #O37)) next thing read. Eg, #^/C would mean 3...
Actually, a more complete theory of this needs to be worked out.
In the NIL extended character set, controllifying actually means adding
in the control bit, not anding out bits.  Maybe the ^ suggestion is a good
idea for alternative "spellings", i.e. one can write #^/C instead of #/<beta>, etc.
To get Control-C, on the other hand, one could write #.(CONTROL #/C) or something.