Used by ATC to inform a pilot to taxi onto the departure runway to line up and wait. It is not authorization for takeoff. It is used when takeoff clearance cannot immediately be issued because of traffic or other reasons.
Listed in the Pilot/Controller Glossary as a cross-reference to LINE UP AND WAIT (LUAW), whose text is shown above.
Source FAA Pilot/Controller Glossary · checked 2026-08-25