См. определение в файле Hand_Events.c строка 42
Используется в HandEventBase::CanPerformEvent(), HandEventSwap::CanPerformEvent(), HandEventBase::CanPerformEventEx(), HandEventRemove::CanPerformEventEx(), HandEventBase::CheckAndExecuteForceStandUp(), HandEventBase::CheckRequest(), HandEventSwap::CheckRequest(), HandEventRemove::CheckRequestEx(), HandEventBase::CheckRequestSrc(), HandEventBase::ClearInventoryReservation(), HandEventBase::DumpToString(), HandEventBase::GetDst() и HandEventBase::ReserveInventory().