Mon, 11 Dec 2017 17:49:47 +0100 wenzelm proper file;
Mon, 11 Dec 2017 14:10:41 +0100 wenzelm clarified file positions;
Mon, 11 Dec 2017 14:10:12 +0100 wenzelm more operations;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 tip