CASEQ

[MOON at MIT-MC (David A. Moon)]

Are you saying that you aren't allowed to have null (what we used to
call NIL) be one of the cases you can select for with CASEQ?  Come on
now, JONL, that is obviously unreasonable.

As far as I can see, the migration from OTHERWISE to T to ()
is picking more and more commonly-used objects as the distinguished
thing which you have to put in parentheses if you want it, with
less and less mnemonic names, which makes CASEQ less and less useful.
This is not the direction you should be going!