With leader of Conservatives ousted, order change (4)

I believe the answer is:

edit

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'change' is the definition.
(edit can mean to change or alter)

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 "Make changes to (text)" , "Supervise - amend" , "Fix" , "modify text" , "Prepare text for publication" .)

I've seen this clue in The Times.

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