Excel function (4)
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I believe the answer is:
sort
'excel function' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sort that I've seen before include "Kind, type or make" , "'Variety, type (4)'" , "Shuffle into desired sequence" , "Separate - kind" , "choice of characters frequently used in statistics" .)