Crossword Genius

Much written about a manuscript (5)

Ross

I believe the answer is:

reams

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'much written about a manuscript' is the definition.
I can't judge whether this definition defines the answer.

'about a manuscript' is the wordplay.
'about' becomes 'rea' (I've seen this in other clues).
'a manuscript' becomes 'ms' (abbreviation for manuscript).
'rea'+'ms'='REAMS'

Can you help me to learn more?

(Other definitions for reams that I've seen before include "a very large amount" , "Scrapes the barrel" , "This much paperwork" , "Large quantity of written matter" , "Lots of paper" .)

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