Tue, 30 Jan 2018 22:46:00 +0100 wenzelm clarified lines: like split_lines;
Tue, 30 Jan 2018 20:36:18 +0100 wenzelm tuned;
Tue, 30 Jan 2018 20:21:55 +0100 wenzelm unused;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 tip