su'au PA4 experimental cmavo

digit/number: exact, exactly equal to, no more and no less, mathematically ideally (no measuring or rounding error)

In the su'e and su'o family. In some sense, it is equivalent to su'e je su'o; in some sense, it emphasizes the exact equality; but it also can distinguish results from data/measurements and mathematical truths. See also: su'ai.

In notes:

su'ai (exp!)
digit/number: precise to within the stated sigfigs (significant figures/digits); approximately, measured to be approximately, with some error/rounding