Sat, 10 Mar 2012 11:21:04 +0000Bringing comment up to date.
Mario de Sousa <msousa@fe.up.pt> [Sat, 10 Mar 2012 11:21:04 +0000] rev 471
Bringing comment up to date.

Fri, 09 Mar 2012 17:58:19 +0000Semantic verification of NOT operator.
Mario de Sousa <msousa@fe.up.pt> [Fri, 09 Mar 2012 17:58:19 +0000] rev 470
Semantic verification of NOT operator.