Properly adjust a file, by the sound of it (5)

I believe the answer is:

align

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'properly adjust' is the definition.
'align' can be an answer for 'adjust' (aligning is a kind of adjusting). I am unsure of the 'properly' bit.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for align that I've seen before include "Arrange in a row" , "Put in rows" , "Put into a straight row" , "Straighten in relation to others" , "Straighten -bring into conformity" .)

I've seen this clue in The Irish News.

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