Acronyms—which according to the N.Y.T is any initialism which is pronounceable as a word instead of by its individual letters—are styled in all capitals when they are four letters or fewer. Longer acronyms are styled in titlecase.
Meanwhile, initialisms retain periods between the capital letters. (I find this to be terribly ugly since it messes up kerning.)
So with this combination of rules we get this ridiculous result: N.F.L., NATO, and Nafta.
They used to write "Nascar", but it seems they've changed their mind on that:
https://www.nytimes.com/2016/06/02/insider/now-it-is-officia...
https://www.nytimes.com/topic/organization/national-associat...
I wonder if anyone can figure out why the N.Y.T. styles broadcast networks as acronyms? ABC, CBS, CNN, NBC.
https://www.nytimes.com/1994/02/20/magazine/on-language-ling...