renamed dest to dest_table, and extern to extern table; added name space intern/extern;
renamed dest to dest_table, and extern to extern table;
added name space intern/extern;

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