Sat, 21 Sep 2002 21:10:34 +0200 paulson converted to Isar script
Fri, 20 Sep 2002 11:49:38 +0200 paulson shortened a proof
Fri, 20 Sep 2002 11:49:06 +0200 paulson got rid of deepen_tac
(0) -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip