Pare down docopt. Return a minimal dictionary and a set containing runtime arg values.

def get_docargs(self, args=None, prt=None):
        """Pare down docopt. Return a minimal dictionary and a set containing runtime arg values."""
        # docargs = self.objdoc.get_docargs(args, exp_letters=set(['o', 't', 'p', 'c']))
        docargs = self.objdoc.get_docargs(args, prt)
        self._chk_docopts(docargs)
        return docargs