off-book posting

неофіційна посада; позаштатна посада (‘The CIA director transferred Everett Finch to London and assigned him an off-book posting’, Dan Brown, The Secret of Secrets)

home defence / forces / posting

off-the-book meeting

off-route (off route)

off-design / off design

lift-off / lift off

on-off keying; on/off keying (OOK)

captain's request book

battery emplacement book

emplacement book

pilot’s log book

account book card

account book code

arrival report book

service-and-conduct book

service-and-pay book

target year book

government war book measures

score book exercise