Wed, 01 Apr 2020 20:17:23 +0200 wenzelm pretty formatting as in Isabelle/ML;
Wed, 01 Apr 2020 18:36:58 +0200 wenzelm output prover messages;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 tip