| Overview |
| Porting to Open Inventor 2.1 |
| Porting Applications With No Custom Classes |
| Porting Custom Classes |
| Scene Appearance Changes in Open Inventor 2.1 |
| New Features |
| Version-Related Changes |
| File Reading and Writing |
| New Nodes |
| New Fields |
| Miscellaneous Additions |
| Incompatible Extender API Changes |
| Methods |
| Elements |
| Shape Nodes |
| Material Property Nodes |
| Engine Evaluation |