Crossword Genius

"Should that be true ..." (2,2)

Ross

I believe the answer is:

if so

'should that be true' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for if so that I've seen before include "Assuming that's true" , "Should that happen?" , "In that case ..." .)

I've seen this clue in The New York Times.
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