To Remove an Assigned Coordinate System

For drawings that contain only drawing objects, using coordinate systems requires many complex calculations that can decrease performance when querying objects from attached drawings and saving back the objects.

To remove an assigned coordinate system

1. At the Command prompt, enter ADESETCRDSYS.
2. In the Assign Global Coordinate System dialog box, in the Code box under Current Drawing, enter a period (.). Press Enter.
3. Click OK.