Examine what poetry should do? (4)
I believe the answer is:
scan
'examine' is the definition.
(I know that scan is a more specific form of the action examine)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for scan that I've seen before include "at one's feet?" , "Examine hastily" , "Examine carefully" , "Take a quick look" , "Examine, view" .)