Fri, 29 Oct 1999 12:45:14 +0200 wenzelm \isasym;
Fri, 29 Oct 1999 10:10:31 +0200 oheimb improved singleton_insert_inj_eq
Thu, 28 Oct 1999 19:57:34 +0200 wenzelm improved presentation;
(0) -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip