Depiction of auditor's inferior path (9)

I believe the answer is:

portrayal

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'depiction' is the definition.
(portrayal is a kind of depiction)

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

(Other definitions for portrayal that I've seen before include "It depicts" , "drawing" , "Study" , "painting" , "Depicting characters" .)

I've seen this clue in the Sydney Morning Herald.

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