new datatype 'mixfix' now pervasive (old one still accesible via OldMixfix);
new datatype 'mixfix' now pervasive (old one still accesible via OldMixfix);

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle