Changes from Mercurial (hg http://isabelle.in.tum.de/repos/isabelle/ default)
Summary
- clarified markup;
- clarified rendering, notably of \<^latex>CARTOUCHE in outer syntax;
- tuned;
- clarified spell-checking (see also 30233285270a);
- more accurate markup;
- clarified signature;
- more markup for various text kinds, notably for nested formal comments;
- tuned whitespace;
- clarified rendering: use COMMENT4 elsewhere;