Tue, 25 Jun 1996 17:44:43 +0200 oheimb Initial revision
Tue, 25 Jun 1996 13:18:54 +0200 berghofe Changed argument order of nat_rec.
(0) -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip