LOGICAL useSmoothCorrel2DinAdMode, useSmoothCorrel2DinFwdMode
& useSmoothCorrel2DinAdMode, useSmoothCorrel2DinFwdMode,
ctrlSmoothCorrel2D = useSmoothCorrel2DinFwdMode
useSmoothCorrel2DinFwdMode = ctrlSmoothCorrel2D