Furuno GP-3500 Operator's Manual page 168

10. RECORDING & PLAYING BACK DATA
Waypoint data format
PFEC, GPwpl, llll.llll, a, yyyyy.yyy, a, c----c, c, c----c, a <CR><LF>
1: Waypoint latitude
2: N/S
3: Waypoint longitude
4: E/W
5: Waypoint name (Number of characters is fixed 6 and space code is placed
when the number of characters are less than 6.)
6: Waypoint color
7. Waypoint comment (1 byte for mark code +13 characters of comment.)
st
1 byte of mark code: Fixed to "@".
nd
2 byte of mark code: Internal mark code. See Note 1.
8. Information of marking waypoint. Always set to "A".
"A": Displayed
"V": Not displayed.
Note 1: The following characters can be used for comments:
10-18
1 2
Waypoint data format
_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789&'#
=9 =:
=>
=B
=F
Characters available for comment
3 4 5 6
=;
=<
=?
=@
=D
=C
=G
7 7
8
= =
=A
=E
=H