Does UT Austin Superscore?

I see on their website (https://admissions.utexas.edu/apply/freshman-admission#fndtn-t33-multiple-score-reports) that they “will consider the strongest composite score submitted.” Does that mean they take 1 score or take the best sections from multiple?

Do I have a screw loose or do they superscore?

It means they consider the single test date with the highest score. UT does not superscore.