The Roof Selection Settings, under the Model choices dialog, indicates three possible choices for raftres ends a) perpendicular, vertical and custom.
Any clues how to create/acces this Custom function ?
Win 10 Home Premium - AMD Phenom IIX6 1090T Processor 3.20 GHZ 8.00 GB RAM 64-bit Opp. Sys NVIDIA Quadro 4000 AC 22, MEP