| Sun, 27 Sep 2020 23:02:25 +0200 | wenzelm | suppress ligatures more robustly, notably for lualatex; | changeset | files |
| Sun, 27 Sep 2020 17:02:59 +0200 | wenzelm | ISABELLE_PDFLATEX is now lualatex; | changeset | files |
| Sat, 26 Sep 2020 18:59:12 +0200 | nipkow | added lemma | changeset | files |