Fri, 23 Apr 1999 17:01:36 +0200 wenzelm tuned antiquotations;
Fri, 23 Apr 1999 16:38:22 +0200 wenzelm improved 'single' method;
Fri, 23 Apr 1999 16:33:23 +0200 wenzelm added thus, hence;
(0) -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip