Ambiguity on whether or not clipping and CSG geometry is deprecated in documentation

[Original post](https://forums.buildingsmart.org/t/clipping-csg-geometry-concepts/3100)

I recently discovered two confusing notes in ifc4 html documentation. Is that supposed to mean that IfcBooleanClippingResult, IfcBooleanResult & IfcPrimitive3D are essentially deprecated (i.e. can be imported but should not be exported)? Isn’t that a bit conflicting with DTV idea? :thinking:

[https://standards.buildingsmart.org/IFC/DEV/IFC4_3/RC1/HTML/schema/templates/body-clipping-geometry.htm 1](https://standards.buildingsmart.org/IFC/DEV/IFC4_3/RC1/HTML/schema/templates/body-clipping-geometry.htm)

NOTE This representation type is predominately used for compatibility with previous releases of the standard.

[https://standards.buildingsmart.org/IFC/DEV/IFC4_3/RC1/HTML/schema/templates/body-csg-geometry.htm 2](https://standards.buildingsmart.org/IFC/DEV/IFC4_3/RC1/HTML/schema/templates/body-csg-geometry.htm)

NOTE The Items__IfcBooleanResult and IfcPrimitive3D shall also be allowed for compatibility with previous releases of the standard.