I just realized that my college - and maybe my classical studies professors - had a quirk that I don't think I've seen anywhere else, and I wonder now how widespread it is:
When we referred to a page in a text, we did it in tenths of a page. So if the line we were referring to was about 40% of the way down the page on page 127, we'd refer to it as "127 point 4" to direct the eyes of the rest of the class.
Does anyone else do that?