Intro_locales_tac knows about defines elements; more robust export morphism.
Intro_locales_tac knows about defines elements; more robust export morphism.

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