Welded Polygonal Hollow Sections

The previous display of welded polygonal hollow cross-sections has been revised to simplify the modeling of these cross-sections. In earlier versions, it was necessary to specify an opening for welded polygonal hollow cross-sections, which was unnecessary in many cases. In the current version, the number of parts is now adapted automatically to the number of sides of the cross-section, allowing for a more accurate and user-friendly display.