2010-08-15 wenzelm 2010-08-15 renamed class Document to Document.Version etc.; renamed Change.prev to Change.previous, and Change.document to Change.current; tuned;
2010-08-14 wenzelm 2010-08-14 more basic Markup.parse_int/print_int (using signed_string_of_int) (ML); added convenient Markup.Int/Long objects (Scala); simplified "assign" message format -- explicit version id; misc tuning and simplification;
2010-08-14 wenzelm 2010-08-14 moved isar_document.ML/scala to Pure/System/ -- side-by-side with isar.ML;