In a recent note, "Shmuel Metz (Seymour J.)" said: > Date: Wed, 6 Sep 2006 11:27:08 -0300 > > >Or two checkboxes? > > 3? > > APAR > Q&A > PTF > Etc. Surely that's better than the 7 which would result from expanding the Cartesian product and eliding the null.
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