Used to convert material and light definitions to the current product release.
| Type: | Integer | 
| Saved in: | Registry | 
| Initial value: | 1 | 
| Value | Description | 
|---|---|
| 0 | No material or lighting conversion takes place when the drawing is opened | 
| 1 | Material and lighting conversion takes place automatically | 
| 2 | You are prompted to convert any materials or lighting |