Paper’s checked by acting Head of News, one writing legal documents (9)

I believe the answer is:

draftsman

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'one writing legal documents' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'paper's checked by acting head of news' is the wordplay.
'paper's' becomes 'FT's' (newspaper the FT, Financial Times).
'checked by' means one lot of letters goes inside another.
'acting' becomes 'drama' (I've seen this before).
'head of' says to take the initial letters.
The first letter of 'news' is 'n'.
'fts' put inside 'drama' is 'draftsma'.
'draftsma'+'n'='DRAFTSMAN'

Can you help me to learn more?

(Another definition for draftsman that I've seen is " One who draws up legal documents".)

I've seen this clue in The Times.

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