Crossword Genius

Shows appreciation of many a footnote (5)

Ross

I believe the answer is:

claps

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'shows appreciation' is the definition.
(I've seen this in another clue)

'many a footnote' is the wordplay.
'many' becomes 'c' (C is the Roman numeral for l00).
'a footnote' becomes 'laps' (I can't explain this - if you can you should believe this answer much more).
'c'+'laps'='CLAPS'

'of' acts as a link.

Can you help me to learn more?

(Another definition for claps that I've seen is " Applauds".)

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