code: def update(self, reseed):
          
          if self._clear:
              for i in range(0, 3):
                  self._screen.print_at(" ",
                                        self._x,
                                        self._screen.start_line + self._y + i)
              self._maybe_reseed(reseed)
          else:
              for i in range(0, 3):
                  self._screen.print_at(chr(randint(32, 126)),
                                        self._x,
                                        self._screen.start_line + self._y + i,
                                        Screen.COLOUR_GREEN)
              for i in range(4, 6):
                  self._screen.print_at(chr(randint(32, 126)),
                                        self._x,
                                        self._screen.start_line + self._y + i,
                                        Screen.COLOUR_GREEN,
                                        Screen.A_BOLD)
              self._maybe_reseed(reseed)
docs: Update that trail!
  
          :param reseed: Whether we are in the normal reseed cycle or not.