Crossword Genius

Formal document incorporating a copyright stamp (9)

Ross

I believe the answer is:

character

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'stamp' is the definition.
(thesaurus)

'formal document incorporating a copyright' is the wordplay.
'formal document' becomes 'charter' (charter is a kind of document. I am not sure about the 'formal' bit.).
'incorporating' is an insertion indicator.
'copyright' becomes 'C' (as in the copyright symbol, a C in a circle).
'a'+'c'='ac'
'charter' going around 'ac' is 'CHARACTER'.

Can you help me to learn more?

(Other definitions for character that I've seen before include "Amusing individual" , "Letter or number" , "Stamp < letter" , "Distinctive nature" , "Make-up" .)

I've seen this clue in The Telegraph.
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