For pressurised aircraft, switch this on to disable the barometer in the device and avoids the possibility of cabin altitude being mistaken for pressure altitude.
When off, the pressure altitude from the barometer in the device will be broadcast and used to compare altitudes with other aircraft.
Switch this on for any low speed or low altitude types such as hang gliders, paragliders, paramotors, trikes and the like. Leave it off for all other types.
This is used to set the speed and height parameters that are used to detect takeoff and landing.
This fixes a minor issue where some local data was not being cleared out after sign out.