Furuno GP-3300 - Manual (Page 45)

3-4
3.4 Deleting Marks
Deleting marks with the cursor
1. Operate the trackball to place the cursor on the mark you want to
delete.
2. Press the [CLR] key.
If the mark cannot be erased, there may be several marks superim-
posed on one another. In this case, press the [CLR] key several times.
Marks played back from a memory card cannot be deleted from screen.
Deleting specific marks
1. Press [MENU], [9] and [1] to display the EDIT/TRACK MARK menu.
2. Select DEL MARK from the ITEM field.
3. Select method of change from the MODE field:
CURSOR: Select the marks to erase with the crosshair cursor.
BOX: Circumscribe the marks to erase with the box cursor.
ON SCRN: Erase all marks displayed on the screen.
OFF SCRN: Erase marks stored in memory.
4. For CURSOR or BOX, select start point.
5. Press the [ENT] key.
6. For CURSOR or BOX, select stop point.
7. Press the [ENT] key.
8. Press the [ENT] key again.
Deleting all marks
1. Press [MENU], [7] and [3] to display the DELETE MARK screen.
7-3 DELETE MARK
TRACK MARKS USED : 3210
MAX : 4000
ARE YOU SURE ? IF YES PRESS ENT.
Figure 3-5 DELETE MARK screen
2. Press the [ENT] key.