Made long story short? (6)
I believe the answer is:
edited
'made long story short?' is the definition.
Both the definition and answer are adjectives. Perhaps there's an association between them I don't understand?
This is all the clue.
Can you help me to learn more?
(Other definitions for edited that I've seen before include "Prepared text for publication" , "Changed for going out" , "Prepared a paper" , "Changed text" , "Corrected" .)