Broaden Edwin's outlook (5)

I believe the answer is:

widen

I'm a little stuck... Click here to teach me more about this clue!

'broaden' is the definition.
(I know that broaden can be written as widen)

'edwin's outlook' is the wordplay.
'edwin' can be anagrammed to 'WIDEN'.
But, I am not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for widen that I've seen before include "Add" , "Broaden - enlarge" , "Stretch sideways" , "Dilate" , "Edwin (anag)" .)

I've seen this clue in The Globe and Mail.

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