| Tue, 16 Jan 2018 09:30:00 +0100 | wenzelm | standardized towards new-style formal comments: isabelle update_comments; | file | diff | annotate |
| Sat, 17 Dec 2016 13:42:25 +0100 | wenzelm | tuned; | file | diff | annotate |
| Fri, 12 Aug 2016 17:53:55 +0200 | wenzelm | more symbols; | file | diff | annotate |