Summary
- Experimental support for rewrite morphisms in locale instances.
- tuned signature;
- more documentation;
- clarified markup;
- discontinued old form of marginal comments;
- tuned document;
- clarified comments;
- standardized towards new-style formal comments: isabelle update_comments;
- uniform treatment of old-style and new-style comments;
- tuned signature;
- clarified markup;
- more uniform support for formal comments in outer syntax, notably \<^cancel> and \<^latex>;
- clarified modules; more operations;