NOTE: Corresponding STEP entity:
solid_model, only three subtypes have been incorporated into the current IFC
Release - subset of manifold_solid_brep (IfcManifoldSolidBrep,
constraint to faceted B-rep), swept_area_solid (IfcSweptAreaSolid), the
swept_disk_solid (IfcSweptDiskSolid) and subset of csg_solid
(IfcCsgSolid). The derived attribute Dim has been added at this
level and was therefore demoted from the geometric_representation_item. Please
refer to ISO/IS 10303-42:1994, p. 170 for the final definition of the formal
standard.
HISTORY: New entity in IFC Release
1.5