You can reset the map at any time by tapping the Zoom button at the bottom of the screen.

The first tap of the Zoom button will reset the map to the lowest zoom level and show as much of your current area as possible.

The second tap of the Zoom button will zoom the map into the closest zoom level available.

You can combine the Zoom button with the Track button. Tap Track and then tap the Zoom button twice to zoom in on your current location according to the tablet GPS.