code: def save_point(self) -> str:
          
          if self._current_mount is left:
              msg = self.save_mount_offset()
              self._current_mount = right
          elif self._current_mount is types.Mount.LEFT:
              msg = self.save_mount_offset()
              self._current_mount = types.Mount.RIGHT
          else:
              pos = self._position()[:-1]
              self.actual_points[self._current_point] = pos
              log.debug("Saving {} for point {}".format(
                  pos, self._current_point))
              msg = 'saved #{}: {}'.format(
                  self._current_point, self.actual_points[self._current_point])
          return msg
docs: Indexes the measured data with the current point as a key and saves the
          current position once the 'Enter' key is pressed to the 'actual points'
          vector.