Most extreme about writing (4)

I believe the answer is:

text

'writing' is the definition.
(I know that text is a type of passage)

'most extreme about' is the wordplay.
'about' indicates the answer is hidden within the clue (the clue goes around or about the answer).
'TEXT' can be found hidden inside 'most extreme'.

(Other definitions for text that I've seen before include "Written document" , "Mobile phone message" , "Main body of book or page" , "Sermon basis" , "Words of a book" .)

I've seen this clue in The Daily Express.

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