| Name | ID | Description | Type | 
|---|---|---|---|
| Mesh, Surface, Brep or IfcShell | G | IfcShell, Mesh, Surface or Brep (Surface and Breps will be meshed where necessary) | Geometry | 
| Mesh Tolerance | T | Mesh face tolerance to original surface, zero will enable nurbs faces in IFC44 and newer | Number | 
| Name | ID | Description | Type | 
|---|---|---|---|
| IfcShellBasedSurfaceModel | S | IfcShellBasedSurfaceModel | Geometry | 
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