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| Name | Parasolid Model Part File | HOOPS Stream Format |
| File extension | .x_t, .x_b | .hsf |
| Original software | ||
| Binary | ■ | ■ |
| ASCII | ||
| Polygonal | ■ | |
| NURBS | ■ | |
| Solids | ||
| Smoothing groups | ■ | ■ |
| Textures, materials | ■ | |
| Developer/Owner | Siemens PLM Software | Tech Soft 3D |
| Description | ||
| Specification | Open HSF doc | |
| Format features | File geometric kernel Parasolid. Is used by CAD-systems such as NX, Solid Efge, SolidWorks | One attempt to create « universal » 3D-format for publishing CAD-models. To date, work on improving it stopped |
| Viewing software | Delcam Exchange 2012 (free) | Hoops Publish |