Second of three equal parts in premeditated corrective action (4)

I believe the answer is:

edit

I'm a little stuck... Click here to teach me more about this clue!

'corrective action' is the definition.
(you might edit something to correct it)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for edit that I've seen before include "doctor" , "work on newspaper?" , "Be in charge (of paper)" , "Prepare text for publication" , "Amend and correct" .)

I've seen this clue in The Guardian.

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