Perhaps rewrite bits due to be emended (3-4)

I believe the answer is:

sub-edit

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'perhaps rewrite' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'bits due to be emended' is the wordplay.
'to be emended' is an anagram indicator.
'bits'+'due'='bitsdue'
'bitsdue' anagrammed gives 'SUB-EDIT'.

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

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