Some areas today right on the map (4)
I believe the answer is:
east
'right on the map' is the definition.
(I've seen this in another clue)
'some areas today' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'EAST' is hidden within 'areas today'.
(Other definitions for east that I've seen before include "Bidder after North (bridge)" , "Opposite of west" , "Bearing of ninety degrees" , "Direction of the Orient" , "Direction of the rising sun" .)