| IfcBSplineCurve, IfcCompositeCurve, IfcPolyline, IfcTrimmedCurve |
| Entité | Attributs |
|---|---|
| IfcRepresentationItem | LayerAssignments, StyledByItem |
| IfcCurve | Dim |
| Entité | Liste d'attributs |
|---|---|
| IfcArbitraryOpenProfileDef | Curve |
| IfcPolygonalBoundedHalfSpace | PolygonalBoundary |