Furuno 1763C - Manual (Page 112)

3. PLOTTER OPERATION
3-28
Erasing all marks, lines
You can erase all marks and lines. Be absolutely sure you want to erase all
marks and lines - erased marks and lines cannot be restored.
1. Press the [MENU] key followed by the CHART SETUP, TRACKS & MARKS
CONTROL and ERASE T & M soft keys to show the ERASE menu.
2. Use the cursor pad to select ERASE ALL MARKS/LINES and press the EDIT
soft key.
3. Push the [ENTER] knob to erase all marks and lines.
4. Press the [MENU] key twice to close the menu.