New in Rhino 8

The EditClippingDrawings command allows updating the option settings for existing clipping drawings.

AddBackground [Yes|No]
Projects the visible and hidden silhouette curves in front of the clipping plane.

Projection [Parallel|Perspective]
AddBackground=Yes only, sets the camera projection type. The camera location is set to the closest point on the clipping plane from the center of the bounding box of clipped objects.