Theatrically, he trimmed counter or a picture file? (6)
I believe the answer is:
figaro
'theatrically he trimmed' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'counter or a picture file?' is the wordplay.
'counter' is a reversal indicator.
'picture file?' becomes 'gif' (I can't justify this - if you can you should give a lot more credence to this answer).
'or'+'a'+'gif'='oragif'
'oragif' reversed gives 'FIGARO'.
Can you help me to learn more?
(Other definitions for figaro that I've seen before include "Mozart's 'Marriage'" , "devoured in Paris" , "Mozart tells of his operatic marriage" , "Motzart opera ''The Marriage of . . . . . . ''" , "Hero of Mozart opera" .)