Improves the speed of incremental saves, especially for large drawings.
| Type: | Integer | 
| Saved in: | Registry | 
| Initial value: | 1 | 
ISAVEBAK controls the creation of a backup file (BAK). In the operating system, copying the file data to create a BAK file for large drawings takes a major portion of the incremental save time.
|  
			  Value  | 
 
			  Description  | 
|---|---|
|  
			  0  | 
 
			  No BAK file is created (even for a full save)  | 
|  
			  1  | 
 
			  A BAK file is created  |