code: def insertRow(self, position):
          
          if position == -1:
              position = self.nrows()
          defaultparam = { 'start': 0,
                           'step': 0,
                           'stop': 0,
                           'parameter': '',
                           'selection' : [],
                          }
          self._parameters.insert(position, defaultparam)
docs: Inserts an empty parameter at index *position*
  
          :param position: order to insert new parameter to
          :type position: int