Determines whether object snapping is active for geometry in DGN underlays that are attached to the drawing.
| Type: | Integer | 
| Saved in: | Registry | 
| Initial value: | 1 | 
The UOSNAP system variable overrides the DGNOSNAP setting.
|  
			  Value  | 
 
			  Description  | 
|---|---|
|  
			  0  | 
 
			  Turns off object snapping for geometry in all DGN underlay attachments in the drawing  | 
|  
			  1  | 
 
			  Turns on object snapping for geometry in all DGN underlay attachments in the drawing  |