The ones he's to edit (5)
I believe the answer is:
those
'the ones' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'he's to edit' is the wordplay.
'edit' indicates an anagram (I've seen 'edited' mean this).
'hes'+'to'='hesto'
'hesto' anagrammed gives 'THOSE'.
Can you help me to learn more?
(Other definitions for those that I've seen before include "the more far out?" , "Plural form of that" , "Ethos (anag.)" , "Nostalgic utterance" , "The (things) there" .)