People said to be waiting in lines for hints (4)

I believe the answer is:

cues

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'hints' is the definition.
(a cue is a hint or suggestion)

I can't explain the rest of the clue.

(Other definitions for cues that I've seen before include "Actor's signal" , "Signals for action" , "Prompts for action" , "Snooker ball strikers" , "Actors' signals" .)

I've seen this clue in The Globe and Mail.

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