Crossword Genius

Curtain drawn, take on a tour of (4,4)

Ross

I believe the answer is:

show over

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'curtain drawn' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'take on a tour of' is the wordplay.
I cannot quite see how this works, but
'take' could be 'show' (showing is a kind of taking) and 'show' is located in the answer.
'on' could be 'over' (over can mean on top of) and 'over' is present in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).

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I've seen this clue in the Evening Standard.
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