Usage of the Corner Window add-on, creating Custom Corner option.
Reveal options: automatic or scripted
How to add reveal to your objects using ARCHICAD functions or GDL scripting
Linking openings to zone
Small code sample to link your doors and windows to zones in schedule.
Defining the Door/Window Orientation for listing in automatic and custom cases.
Nominal sizes – Automatic dimensioning
Nominal sizes recognized by ARCHICAD: ways to set them up to work correctly with automatic dimensions and IS.