Sat, 25 Apr 2009 14:28:58 +0200 Christian Urban replaced explode by Symbol.explode
Wed, 15 Apr 2009 13:11:08 +0000 Christian Urban replaced "warning" with "writeln"
Mon, 13 Apr 2009 08:30:48 +0000 Christian Urban added something about TRY and TRYALL
Sat, 11 Apr 2009 19:23:58 +0000 Christian Urban very slight polishing to the simple inductive chapter
(0) -100 -30 -10 -4 +4 +10 +30 +100 +300 tip