Information about literary style (5)
I believe the answer is:
genre
'literary style' is the definition.
(I've seen this before)
'information about' is the wordplay.
'information' becomes 'gen' (gen is a kind of information**).
'about' becomes 're' (regarding).
'gen'+'re'='GENRE'
(Other definitions for genre that I've seen before include "Style/category of art" , "expressive style of music" , "Category (of art)" , "Artistic or literary category" , "Style (of art/literature)" .)