AW: „ALT“ is an abbreviation for „Alternative“ and refers to a configurable function key, (see device manual under “Misc Setup” p.61) where a specific function can be assigned via the Setup menu. The Z-N966 unit features an ALT button in the HMI. The following direct function assignments are possible, for the “ALT” button: CAM/NAVI/EQ/Setup/BT-Music/BT/DISP/iPod/USB/HDMI/AV-IN/FM/DAB/Android Auto/CarPlay.