Garmin GMI 20 - Manual (Page 3)

GMI 10 Quick Start Manual 
Unit Overview
Back Power
Soft keys
Instrument
screen
Power —press and hold to power the unit on and off. Press and quickly
release to adjust display settings ( page 12 ).
Soft Keys —used to navigate the menus and select items on the GMI 10.
Typically, the left and right soft keys cycle data on the instrument screen and
navigate menu screens, and the center soft key selects highlighted items and
opens the Menu.
Back —used to move back one menu screen. Press and hold to move all the
way back to the instrument screen from any menu screen.