Mon, 11 Jan 1999 18:45:46 +0100 nipkow Some simplifications.
Mon, 11 Jan 1999 16:51:47 +0100 nipkow More arith simplifications
(0) -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip