Controls whether islands within new hatches and fills are detected in this session.
| Type: | Integer | 
| Saved in: | Not-saved | 
| Initial value: | 1 | 
|  
			  Value  | 
 
			  Description  | 
|---|---|
|  
			  0  | 
 
			  Off.  | 
|  
			  1  | 
 
			  On (recommended). Hatches or ignores islands according to HPISLANDDETECTION.  |