Tue, 23 Jan 2001 15:46:25 +0100 paulson added a "pr" example; tidied
Mon, 22 Jan 2001 17:26:19 +0100 paulson deleted several obsolete lemmas from NatArith.ML
(0) -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip