Garmin GPS II Owner's Manual page 88

REFERENCE
Fig. 82a
Fig 82b
82
3. Highlight the 'speed' field, and press ENTER.
4. Enter a speed, and press ENTER.
5. Highlight the 'position' field, and press ENTER (Fig. 82a).
6. Enter a position, and press ENTER.
The GPS II does not track satellites in simulator mode. Although you can
create and save waypoints and routes while using the simulator mode,
!
never attempt to use the simulator mode for actual navigation.
To reset the altitude:
1. Highlight the 'altitude' field, and press ENTER (Fig. 82b).
2. Press the left side of the rocker keypad.