You can control whether or not to display positional text at the bottom of the map display. This text indicates the location from which you, the observer, are looking at the map, in the map's coordinate units, and the altitude of your viewpoint in the map's distance units.

To toggle the position information
You can toggle the appearance of the position information at the bottom of the map display by checking the Position Information checkbox in the Options group of the Display tab.
Set the coordinate and distance units with the controls in the Units group of the Display tab.