| Tue, 22 Mar 1994 08:28:31 +0100 | nipkow | Used Datatype functor to define propositional logic terms. | file | diff | annotate |
| Wed, 02 Mar 1994 12:26:55 +0100 | clasohm | changed "." to "$" and Cons to infix "#" to eliminate ambiguity | file | diff | annotate |
| Thu, 16 Sep 1993 12:21:07 +0200 | clasohm | Initial revision | file | diff | annotate |