code: def add(self, start, end, cut_point = None, skip_rate = None, extend_loop = None):
          '''Add a new loop definition.'''
          self.data.append(self.parse_loop_line(['LOOP', start, end, cut_point, skip_rate, extend_loop]))
          assert(start <= endf add(self, start, end, cut_point = None, skip_rate = None, extend_loop = None):
          '''Add a new loop definition.'''
          self.data.append(self.parse_loop_line(['LOOP', start, end, cut_point, skip_rate, extend_loop]))
          assert(start <= end)
docs: Add a new loop definition.