more uniform treatment of optional_argument for Latex elements;
discontinued somewhat pointless element position in Isabelle/Scala: semantic add-ons are better provided in Isabelle/ML;
clarified signature of class Latex: overridable unknown_elem allows to extend the markup language;
src/Pure
src/FOL
src/HOL
src/ZF
src/CCL
src/CTT
src/Cube
src/FOLP
src/LCF
src/Sequents
src/Doc
src/Tools