Wed, 28 Aug 2013 00:18:50 +0200 wenzelm more symbols;
Tue, 27 Aug 2013 23:54:23 +0200 wenzelm tuned proofs;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 tip