After opening, is interactive with the East (6)

I believe the answer is:

orient

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'east' is the definition.
(I know that east can be written as Orient)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for orient that I've seen before include "Get one's bearings - to the East?" , "Determine position with regard to points of compass" , "The East - got bearings" , "Rising earlier" , "43 [POSITION]" .)

I've seen this clue in the Evening Standard.

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