Hi all,
I’ve published a compact IFC Visual Cheat Sheet: a single-page map of key IFC classes and relationships to speed up reading the official spec.

Repo: lab-openbim
- SVG (editable): https://github.com/JBA69/lab-openbim/blob/main/IFC%20SCHEMA%20TREE.svg
- PDF (print): https://github.com/JBA69/lab-openbim/blob/main/IFC%20SCHEMA%20TREE.pdf
- PNG (preview): https://github.com/JBA69/lab-openbim/main/IFC%20SCHEMA%20TREE.png

It’s meant for learning/teaching, not a replacement for buildingSMART docs.