Tue, 22 Dec 2009 17:13:43 +0100 wenzelm added plain read_file;
Tue, 22 Dec 2009 17:13:18 +0100 wenzelm consider proper input only;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip