enum IFCWindowPanelOperation {
SideHungRightHand,
SideHungLeftHand,
TiltAndTurnRightHand,
TiltAndTurnLeftHand,
TopHung,
BottomHung,
PivotHorizontal,
PivotVertical,
SlidingHorizontal,
SlidingVertical,
RemovableCasement,
FixedCasement,
OtherOperation,
NotDefined
};