LuDatr Node1 LuDatr - m_dummy - m_realdummy - s_lenMrlu - s_lenRrlu + LuDatr() + ~LuDatr() + mrlu() + rrlu() + init() + lenMrlu() + lenRrlu() Node2 LuDatr::LUDATR + mrlu + rrlu Node2->Node1 -s_ludatr