To Clip an Underlay

1. Click the bounding box of an underlay to select it.
2. Click Contextual tab Clipping panel Create Clipping Boundary.
3. At the command prompt, enter s (Select Polyline), p (Polygonal), r (Rectangular), or i (Invert Clip) and then, draw the specified boundary on the underlay.

   To draw a boundary by selecting a polyline, draw or overlay a polygonal shape created with a polyline on the underlay. Then, click Create Clipping Boundary and select the polyline to create a boundary.

   To draw a polygonal boundary, you are prompted to specify consecutive vertices. To finish drawing a polygon, press Enter or right-click anywhere in the drawing area.