Wed, 30 Dec 2015 20:07:59 +0100 wenzelm more symbols;
Wed, 30 Dec 2015 19:57:37 +0100 wenzelm clarified print modes;
Wed, 30 Dec 2015 19:41:48 +0100 wenzelm clarified print modes;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 tip