Thu, 07 Jan 1999 11:08:29 +0100 if-then-else syntax for ZF
paulson [Thu, 07 Jan 1999 11:08:29 +0100] rev 6069
if-then-else syntax for ZF
(0) -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip