@vicgrinberg @baszoetekouw @knud although in theory LaTeX should take care of the layout, it can only do so if the input is correctly described. When looking at its rendered form and fixing layout issues I'd only fix one instance of a "bug", but that doesn't make the input correct under all possible scenarios. It is like fixing a bug in a program only for x=42, and having everything break when x=433.

I recently looked at how a paper I wrote looks in arXiv's experimental HTML rendering. The footnotes are now on the right margin (great, it is nearer the text), but they have big whitespace gaps in the middle of a sentence and it looks horrible. Not LaTeX's fault, I explicitly told it to keep the name of a company together using ~, which was needed to fix some weird hyphenation when rendered to PDF. But when displayed on the much narrower right margin that is now wrong. It probably would've been better if I told LaTeX to avoid hyphenating the word, instead of telling it to avoid breaking at a space.

But that is all still too low-level (layout fixes leaking into the text). Would be great if LaTeX had a way to semantically say "this is a company name", and then do whatever is appropriate for that based on the current render target.