Answer:
With the SHAPE‑THIN add-on module (thin-walled cross-sections) and SHAPE‑MASSIVE add-on module (thick-walled cross-sections), it is possible to model almost any cross-sections that are entered graphically, in tables, or by importing a DXF file.
For SHAPE‑THIN and SHAPE‑MASSIVE, there are connection possibilities to RFEM 5 and RSTAB 8. Thus, the cross-sections can be transferred to RFEM 5 and RSTAB 8, calculated, and designed in the add-on modules (SHAPE‑THIN cross-sections only).