Jottings offering twisted attack (5)

I believe the answer is:

notes

'jottings' is the definition.
(I've seen this in another clue)

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

(Other definitions for notes that I've seen before include "Pays attention" , "Memos; marks" , "fivers?" , "Brief written records" , "Paper money" .)

I've seen this clue in The Everyman puzzle in The Observer.

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