Furuno FCV-1200L Operator's Manual page 36

6. Press the [-] or [+] key to change the setting.
For many items having several options, a scroll bar (blue) appears. This bar shows the current
cursor position in relation to the entire option range. This bar shifts with operation of [-] or [+]
key.
Selecting window (for item having several options, ex. HUE)
7. Rotate the [FUNCTION] switch fully counterclockwise to select EXIT.
The menu disappears.
2-2
Blue bar
CUSTOM STD HUE1 HUE2 HUE3 HUE4
The blue bar shows the current cursor position in
relation to the option range.
This bar shifts with operation of [-] or [+] key.