View Management

	Use the cutting plane: cut the 3D background of layout views along each view's definition plane.
	Use the clipping frame: clip the 2D and 3D backgrounds of layout views using a frame.
	Use the back-clipping plane: clip the 2D and 3D backgrounds of layout views using a back-clipping plane.
	Manage the layout view background: display and manage the 2D and 3D backgrounds differently for each view.
	Visualize the 2D Elements: filter 2D elements from a 2D Layout view.