Graphical Class Hierarchy Node0 LVL1TGCTrigger::TGCBoard Connection Node1 LVL1TGCTrigger::TGCConnection HPBToSL Node0->Node1 Node2 LVL1TGCTrigger::TGCConnection PPToSB Node0->Node2 Node3 LVL1TGCTrigger::TGCConnection SBToHPB Node0->Node3