Tue, 08 Feb 2011 15:50:26 +0000 urbanc started to define things more directly
Tue, 08 Feb 2011 12:01:28 +0000 zhang More explaination on equational system
Tue, 08 Feb 2011 09:51:49 +0000 urbanc small additions
(0) -30 -10 -3 +3 +10 +30 +100 +300 tip