| Fri, 21 Feb 2020 17:51:56 +0100 | nipkow | tuned deletion | file | diff | annotate |
| Wed, 25 Sep 2019 17:22:57 +0200 | nipkow | replaced new type ('a,'b) tree by old type ('a*'b) tree. | file | diff | annotate |
| Mon, 16 Sep 2019 18:00:27 +0200 | nipkow | tuned | file | diff | annotate |
| Wed, 13 Jun 2018 15:24:20 +0200 | nipkow | qualify interpretations to avoid clashes | file | diff | annotate |