The boxes on the screen indicate what screen number is currently being viewed. Depending on which mode you are playing there are different number of screens. The screen being viewed can be changed by pressing the menu button (the middle button on the left).
The most popular game mode 'GPS + Track' has 5 screens:
1. GPS distances
3. Manual PinCollect 0-3
4. Manual PinCollect 4
5. End Round
Below shows the GPS distances screen and the Penalties screen. You can see box has moved down a space.