The 411 (4)

I think it could be either:

Which length description are you looking for?:

info

'the 411' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for info that I've seen before include "Data received and understood (abbr)" , "counsel?" , "Intelligence (abbr)" , "Knowledge (colloq.)" , "Knowledge provided" .)

I've seen this clue in the Universal and the LA Times.

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