Obtaining Write Access to Map Data
You require write access to the map data before you can edit a map.
When write access to map data is unavailable, the Edit menu and toolbar buttons appear shaded in the MapEdit screen.
Click , or click the Get Write Access button:
The button is renamed to Set Read Only.
Once changes have been completed, return permissions to read-only access. Leaving the program or changing the profile also releases the write-lock.
- Click , or click the Set Read Only button:

The button is renamed to Get Write Access.