Adding a geospatial coordinate reference to the geometric representation context using a recognized coordinate reference system (CRS). This allows to position the project coordinate system on Earth (normally using eastings, northings, elevation above horizontal and vertical datums, and orientation).
https://bsi-infraroom.github.io/IFC-Documentation-Tunnel/4_4_0_0/general/HTML/schema/templates/project-global-positioning.htm
Add more clarity, to support e.g. https://github.com/bSI-InfraRoom/IFC-Tunnel-Deployment/pull/63.