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What do the words in white block capital letters over a red background denote on this aerodrome chart of LHR?
They are named holding points; this allows them to say things like "taxi to RABIT" rather than "taxiway Bravo, hold short of taxiway Charlie". This saves a lot of time for ground controllers at busy, complicated airports.
It's the name of the holding points if ATC asks the plane to stop in the middle of the taxiway to avoid collisions
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