Workshop allows you to display a contour inset a constant distance from the boundary of the developed plate. This plate inset line can be turned on using the Plate Inset Lines item in the Structure dialog. The distance of the line from the plate edge can be set using the Preferences dialog in the Edit menu. Japanese users of Workshop may know this line as a “Sashikoshi” line. It provides a useful line for checking dimensions and alignment of plates independent of any edge distortion which may occur while the plate is being cut or shaped.