Controls whether thumbnail preview images are created and saved with the drawing.
| Type: | Integer | 
| Saved in: | Registry | 
| Initial value: | 1 | 
Obsolete. This system variable has been renamed to THUMBSAVE.
| Value | Description | 
|---|---|
| 0 | No preview image is created in the drawing | 
| 1 | A preview image is created and saved in the drawing |