RegionSelectionSvc Node1 RegionSelectionSvc - m_region_string - m_print_list_of_selected _chambers - m_master_region - m_stations_in_region - m_unique_chambers - m_detMgr - m_idHelperSvc - m_idToFixedIdTool + RegionSelectionSvc() + ~RegionSelectionSvc() + queryInterface() + initialize() + Print() + isInRegion() + GetRegionSelection() + GetStationsInRegions() + AddRegionNtuples() + AddRegionNtuples() + interfaceID() - search_chambers_in _region() - ProcessString() - print_list_of_selected _chambers() - convert_to_tower() Node2 AthService - AthService() - AthService() - operator=() Node2->Node1 Node3 AthCommonMsg< Service > + msg() + msg() + msgLvl() Node3->Node2 Node4 Service Node4->Node3