Thu, 12 Jan 2017 15:54:13 +0100 blanchet added lemma
Thu, 12 Jan 2017 12:32:32 +0100 wenzelm tuned whitespace;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 tip