BeginUpdate()                 LockLayers() 
 BehindLayer()                 MoveLayer() 
 CreateBehindHookLayer()       MoveLayerInFrontOf() 
 CreateBehindLayer()           MoveSizeLayer() 
 CreateUpfrontHookLayer()      NewLayerInfo() 
 CreateUpfrontLayer()          ScrollLayer() 
 DeleteLayer()                 SizeLayer() 
 DisposeLayerInfo()            SwapBitsRastPortClipRect() 
 EndUpdate()                   ThinLayerInfo() 
 FattenLayerInfo()             UnlockLayer() 
 InitLayers()                  UnlockLayerInfo() 
 InstallClipRegion()           UnlockLayers() 
 InstallLayerHook()            UpfrontLayer() 
 LockLayer()                   WhichLayer() 
 LockLayerInfo()