Mon, 17 Mar 2008 22:34:27 +0100 wenzelm avoid rebinding of existing facts;
Mon, 17 Mar 2008 22:34:26 +0100 wenzelm avoid rebinding of existing facts;
(0) -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip