You can use it in both 2D and 3D modes to scale the map. Drag and pull it right to
zoom in, or left to zoom out.
4.5.7 Menu (No. 9)
This button opens the Menu with the Find engine, the Quick menu, the Route menu
and the exit button that takes you to the Main menu screen. The Menu will be
described in detail later: Page 41.
4.5.8 Map orientation and Overview (No. 10)
You can view the map screens in three different presentation modes. This switch will
cycle through them in the following order.
The usual map orientation for navigation is Track-up. It means Uniden Navigation
rotates the map during navigation to always face the direction of your travel. In this
mode an arrow (compass) points towards North.
Tap this icon to switch to North-up mode. Now the map is fixed to keep facing North.
The icon changes to show the new rotation mode.
Tap the icon again to enter Overview mode. This mode looks similar to the North-up
mode with one difference: the zoom level in this mode has a fixed default to give you
a better look of where you are on the map. You can change the zoom level at any
time, this will not cause the Lock button to appear, but when entering Overview mode
later, the default zoom level will be restored.
The arrow representing your position will be fixed in the middle of the screen. When
you move the map in Overview mode, the Lock button will appear, and when pushed,
it will move the map to have your current position in the middle of the map again.
You cannot rotate the map in Overview mode. This mode is strictly north-up.
You can set up Uniden Navigation so that it will switch to Overview mode during
navigation when the next turn is far away. You can specify this distance and the fixed
zoom level of Overview in Advanced settings (Page 68).
An aeroplane icon indicates Overview mode.