Sets the current Projection mode for trimming or extending.
| Type: | Integer | 
| Saved in: | Registry | 
| Initial value: | 1 | 
| Value | Description | 
|---|---|
| 0 | True 3D mode (no projection) | 
| 1 | Project to the XY plane of the current UCS | 
| 2 | Project to the current view plane |