Crossword Genius

Summaries concerning upper limits (6)

Ross

I believe the answer is:

recaps

'summaries' is the definition.
(recap is a kind of summary)

'concerning upper limits' is the wordplay.
'concerning' becomes 're' (both can mean on a particular topic).
'upper limits' becomes 'caps' (I've seen this in another clue).
're'+'caps'='RECAPS'

(Other definitions for recaps that I've seen before include "Such summaries" , "In brief, state again the main points" , "Summarises at the end" , "Reviews" , "Summarises briefly" .)

I've seen this clue in The Everyman puzzle in The Observer.
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