Thu, 23 Feb 2012 20:23:19 +0100 wenzelm tuned;
Thu, 23 Feb 2012 19:58:49 +0100 wenzelm streamlined abstract datatype;
Thu, 23 Feb 2012 19:35:05 +0100 wenzelm tuned -- avoid copy of empty value;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 tip