Mon, 08 May 2017 21:58:15 +0200 wenzelm simplified default;
Mon, 08 May 2017 21:51:26 +0200 wenzelm tuned (again);
Mon, 08 May 2017 20:26:59 +0200 wenzelm allow column with defining expression;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 tip