For Official Use Only (FOUO)

Heading are only shown when magnetometer is in use

Only use to compensate for really bad tunes

Use Dshot beacon (use motors to sound beeps when disarmed)

official document

official record

official Secrets Act

official travel

veteran intelligence official

intelligence officer under official cover

official testing

7.62×51mm NATO (official nomenclature 7.62 NATO)

ranking official

high-ranking foreign official

high-ranking military official

absence without official leave (AWOL)

no official Betaflight target was found

official

Official releases

eyes only

night only computer generated image

FEDCON (Federal Employees and Contractors only)

double-action only

once-only approach

admittance by authorized credentials only

interact with character mode files only

Core Only

electrically erasable programmable read-only memory (EEPROM)

Failsafe only

Hexadecimal digits only, 0-9, A-F

Only arm after successfull EDT handshake

Only flash firmware if you are fully aware what you are doing.

Only MULTI mode currently supported