What the viewer sees in TV is a puzzle (5)

I believe the answer is:

vista

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'what the viewer sees' is the definition.
I can't tell whether this defines the answer.

'tv is a puzzle' is the wordplay.
'puzzle' indicates an anagram.
'tv'+'is'+'a'='tvisa'
'tvisa' with letters rearranged gives 'VISTA'.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for vista that I've seen before include "View (with avenue)" , "One gives a long look" , "Broad prospect" , "Distant view" , "A view as seen through a long narrow opening" .)

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

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