Mon, 02 Jun 1997 12:12:57 +0200 Simplified proof
paulson [Mon, 02 Jun 1997 12:12:57 +0200] rev 3382
Simplified proof
(0) -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip