Displays icons in the Layer Properties Manager to indicate whether layers are in use.
| Type: | Integer | 
| Saved in: | Registry | 
| Initial value: | 0 | 
|  
			  Value  | 
 
			  Description  | 
|---|---|
|  
			  0  | 
 
			  Off, improves performance in the Layer Properties manager  | 
|  
			  1  | 
 
			  On, displays icons that indicate whether layers are in use  |