code: def _chk_docopt_kws(self, docdict, exp):
          
          for key, val in docdict.items():
              if isinstance(val, str):
                  assert '=' not in val, self._err("'=' FOUND IN VALUE", key, val, exp)
              elif key != 'help' and key not in self.exp_keys and key not in self.exp_elems:
                  raise RuntimeError(self._err("UNKNOWN KEY", key, val, exp))
docs: Check for common user errors when running from the command-line.