I assume the author picked up the quotation mark habit from LaTeX. Backticks and apostrophes (single or double) get rendered as proper left and right quotation

I assume the author picked up the quotation mark habit from LaTeX. Backticks and apostrophes (single or double) get rendered as proper left and right quotation marks. It's also possible this was copy+pasted from a LaTeX source and they forgot to fix the quotation marks. The italics on the page are also missing, for me at least. I am seeing them as obliques. The upright roman face is tilted, rather than using the separate set of italic glyphs. Some systems do this if the italic glyphs can't be found or something is misconfigured.