Crossword Genius

One fast turn over another? True! (3,1,4)

Ross

I believe the answer is:

its a fact

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'another? true' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'one fast turn over' is the wordplay.
'one' becomes 'i' (Roman numeral).
'turn' says the letters should be written backwards.
'over' becomes 'act' (I can't explain this - if you can you should believe this answer much more).
'fast' in reverse letter order is 'tsaf'.
'i'+'tsaf'+'act'='ITS A FACT'

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