Note raffia has straightened only to a certain extent (5,1,7)

I believe the answer is:

after a fashion

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

'to a certain extent' is the definition.
(I've seen this before)

'note raffia has straightened only' is the wordplay.
'note raffia has' can be anagrammed to 'AFTER A FASHION'.
Though, I'm not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for after a fashion that I've seen before include "In some (unsatisfactory) manner" , "To a certain extent" , "Like a trendy shopper" , "contrive to be not that well" , "Lady shopping may be" .)

I've seen this clue in the Sydney Morning Herald.

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