Quick, help with address? (6)

I believe the answer is:

prompt

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'quick' is the definition.
(I know that quick can be written as prompt)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for prompt that I've seen before include "Quick, without delay" , "Give hint as to actor who has forgotten lines (6)" , "Whisper lines to forgetful actor" , "Quick - cue" , "Spurs do this" .)

I've seen this clue in The Telegraph.

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