major reworking of export functionality -- based on Term/Thm.generalize; tuned interfaces;
major reworking of export functionality -- based on Term/Thm.generalize;
tuned interfaces;

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