Furuno GP-33 - Manual (Page 61)

7. OTHER FUNCTIONS
7-11
Waypoint data format
$PFEC, GPwpl, llll.ll, a, yyyyy.yy, a, c—c, c, c—c, a, hhmmss, xx, xx, xxxx <CR><LF>
1 2 3 4 5 6 7 8 9 10 11 12
1: Waypoint latitude
2: N/S
3: Waypoint longitude
4: E/W
5: Waypoint name (1 to 8 characters)
6: Waypoint color
(NULL/0: black, 1: red, 2: yellow, 3: green, 4: brown, 5: purple, 6: blue)
7: Waypoint comment (”@_ (see below.)” + 0 to 13 characters)
8: Flag marking waypoint (A: displayed, V: Not displayed)
9: UTC (Always NULL)
10: Day (Always NULL)
11: Month (Always NULL)
12: Year (Always NULL)
0x10: @q, 0x11: @r, 0x12: @s:, 0x13: @t, 0x14: @u,
0x15: @v, 0x16: @w, 0x17: @x, 0x18: @y, 0x19: @z
-Internal mark code is 0x10 through 0x19. 0x71 through 0x7A are always
place at 2nd byte of mark code.
-Following characters can be used for comments:
_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789&()+-/=?> (space)