Select Setup > Map > Advanced Setup.

Auto Zoom

Automatically sets the zoom level for optimal use of your map. When Off is selected, you must zoom in or out manually.

Detail

Sets the amount of detail shown on the map. Showing more detail may cause the map to redraw more slowly.

Shaded Relief

Shows detail relief on the map (if available) or turns off shading.

Vehicle

Allows you to select a position icon, which represents your position on the map.

Zoom Levels

Sets the zoom level at which map items will appear. Map items do not appear when the map zoom level is higher than the selected level.

Text Size

Sets the text size for map items.