Carry on in summary fashion (6)

I believe the answer is:

resume

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'carry on' is the definition.
(I know that resume is a type of carry on)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for resume that I've seen before include "Pick up again" , "Carry on where one left off" , "Take up where you left off" , "Start again where one left off" , "Go on after a pause" .)

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

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