Indicates whether a drawing file is read-only or can be revised.
(Read-only)
| Type: | Integer | 
| Saved in: | Not-saved | 
| Initial value: | 1 | 
For developers who need to determine write status through AutoLISP.
|  
			  0  | 
 
			  Cannot write to the drawing  | 
|  
			  1  | 
 
			  Can write to the drawing  |