Designing complex roofs and staircases is traditionally one of the most tedious tasks in CAD. Arcon simplifies this with dedicated wizards. The roof editor handles gables, hips, dormers, and complex multi-roof intersections effortlessly. Similarly, the stair constructor auto-calculates risers and treads for straight, L-shaped, or spiral staircases based on your floor-to-floor heights. 5. Export and Interoperability