Garmin GPSMAP 378 Owner's Manual page 41

2. Highlight the field below Proximity Alarm, and press
ENTER.
3. Select the On or Off setting, and press ENTER.
To add a proximity waypoint:
1. From the Proximity Points tab, use the ROCKER to highlight
an empty line on the Proximity list, and press ENTER. The
Find Menu opens.
2. Select a waypoint or point of interest from the Find Menu.
3. With OK highlighted, press ENTER to select the point.
4. Use the ROCKER to enter a distance value (up to 99.99
units), and press ENTER.
GPSMAP 378/478 Owner's Manual
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To clear one or all proximity waypoints from the list:
1. Highlight the Points tab on the Main Menu, and then select
the Proximity sub tab.
2. Highlight the proximity waypoint to clear, and press MENU.
Proximity Points Tab Options Menu
3. To clear a single alarm, highlight Remove Point, and press
ENTER. To clear all proximity waypoints, select Remove All,
and press ENTER.
4. Highlight OK, and press ENTER to confirm.
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