Developed (unfolded) section in AutoCAD or BricsCAD

Developed section (http://rcad.eu/) - An add-on for AutoCAD or BricsCAD, which determines the developed (unwrapped) section of one set of 3DSOLID, 3DMESH or 3DFACE entities with vertical planes passing through a 2D POLYLINE which may contain arcs.
You can actually make the section along any curve. The curve must first be approximated with a Polyline. Section can be wrapped or unwrapped.
The program is useful for design engineers.

For additional details watch the subtitle.