| Sat, 08 Jan 2011 17:14:48 +0100 | wenzelm | misc tuning and comments based on review of Theory_Data, Proof_Data, Generic_Data usage; | changeset | files |
| Sat, 08 Jan 2011 16:01:51 +0100 | wenzelm | modernized structure Prop_Logic; | changeset | files |
| Sat, 08 Jan 2011 14:32:55 +0100 | wenzelm | added Context_Position.is_visible_proof, which treats a global theory as invisible (unlike the default); | changeset | files |