Mon, 28 Jan 2019 20:32:09 +0100 wenzelm revert accident with raw Unicode (not Isabelle symbols) in 7404f5b91e56;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 tip