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6.337 CADTriggerUndo

IO Parameter Type Description
in theCADArea longint Area ID
in theUndoName Str255
in theUndoByAppEventParam longint
in theUndoTrigger integer An undo trigger constant
in theOptionalObjScopeOrID longint 0 or kCADScopeSelectedObjects, kCADScopeAllObjects, kCADScopeObjOnEditableLayers, a Layer ID, a Sublayer ID, a programmer scope ID or an Object ID
out function result OSErr Error result code, also see Error handling