Translations:Tutorial for open windows/63/en

From FreeCAD Documentation

24. Switch back to the Arch Workbench. In the tree view select all components again, and use the Arch SectionPlane tool to create a second Section001 element.

24.1. Select Section001 and change the property DataPosition to [1.5 m, 2.0 m, 1.8 m]. This second plane does cut through all Arch objects.
24.2. Switch back to the TechDraw Workbench. Select Section001, use the TechDraw ArchView tool to create ArchView001, and set DataScale to 0.02. The new view in the TechDraw page now shows all openings in the Arch Wall produced by doors and windows.