Specifies if and when thumbnails are captured for the Rewind tool.
| Type: | Integer | 
| Saved in: | Registry | 
| Initial value: | 1 | 
|  
			  Value  | 
 
			  Description  | 
|---|---|
|  
			  0  | 
 
			  No preview thumbnails are generated when a view change occurs outside the SteeringWheels  | 
|  
			  1  | 
 
			  Preview thumbnails are generated on demand for the Rewind tool when the bracket is positioned over an empty frame  | 
|  
			  2  | 
 
			  Preview thumbnails are automatically generated after each view change occurs  |