In what way is it a showpiece? (3)

I believe the answer is:

how

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'in what way' is the definition.
(synonyms)

'it a showpiece?' is the wordplay.
'HOW' is hidden within the letters.
But, I am unsure how this is indicated.

'is' acts as a link.

Can you help me to learn more?

(Other definitions for how that I've seen before include "Who (anag.)" , "In what way?" , "See 16" , "By what means?" , "In what manner or method?" .)

I've seen this clue in the Evening Standard.

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