Wed, 21 Jan 1998 15:50:25 +0100 wenzelm added symbols syntax;
Tue, 20 Jan 1998 18:26:26 +0100 wenzelm reorganized into individual theories;
Mon, 19 Jan 1998 16:26:11 +0100 wenzelm tuned;
(0) -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip