Garmin AERA 660 Pilot's Manual page 76

Navigation
a) From the Main Menu, touch GPS Info > Position Tab > Menu.
b) Touch Mark Waypoint.
2) Enter the desired user waypoint name (up to 10 characters) and touch
Enter. Refer to the Overview Section on 'Data Entry' for more information.
3) If changing the User Waypoint settings (symbol, altitude, location, or
reference waypoints) continue with Step 4.
4) If desired, touch the Symbol Field to change the symbol that will appear
on the map.
a) Touch the desired symbol.
b) Touch OK.
5) If desired, touch the Altitude Field
a) Enter the desired altitude using the keypad or the +/- buttons. Refer to
the Overview Section on 'Data Entry' for more information.
b) Touch Enter.
6) If desired, touch the Location Field.
a) Enter the desired latitude and longitude by touching the left/right
arrows to move the cursor, and the up/down arrows to change the
value.
b) Touch Enter.
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User Waypoint Symbols
Garmin aera 660 Pilot's Guide 190-02017-20 Rev. A