Summary of unfashionable policy (7)
I believe the answer is:
outline
'summary' is the definition.
(outline is a kind of summary)
'unfashionable policy' is the wordplay.
'unfashionable' becomes 'out' ('out' can be a synonym of 'unfashionable').
'policy' becomes 'line' (I've seen this before).
'out'+'line'='OUTLINE'
'of' acts as a link.
(Other definitions for outline that I've seen before include "Synopsis -- silhouette" , "Give a rough idea" , "Sketch, delineate" , "Sketch; general statement" , "Sketch; summarise" .)