code: def review_args(self, obj, show_repr=False, heading='Arguments'):
          
          args = obj.args if isinstance(obj, Launcher) else obj
          print('\n%s\n' % self.summary_heading(heading))
          args.summary()
          if show_repr: print("\n%s\n" % args)
          response = self.input_options(['y', 'N','quit'],
                  '\nShow available argument specifier entries?', default='n')
          if response == 'quit': return False
          if response == 'y':  args.show()
          print('')
          return True
docs: Reviews the given argument specification. Can review the
          meta-arguments (launch_args) or the arguments themselves.