| Mon, 17 May 1999 10:38:47 +0200 | paulson | new thm extend_JN; renamed extend_leadsto | file | diff | annotate |
| Thu, 29 Apr 1999 10:51:58 +0200 | paulson | made many specification operators infix | file | diff | annotate |
| Tue, 20 Apr 1999 14:35:12 +0200 | paulson | new result extend_LeadsTo | file | diff | annotate |
| Tue, 09 Mar 1999 11:09:01 +0100 | paulson | tidied | file | diff | annotate |
| Wed, 03 Mar 1999 10:32:35 +0100 | paulson | new theory of extending the state space | file | diff | annotate |