Opinions on: line as a functional unit

[Bluetoes101]

I don't think that's a stupid question. A really interesting one that I hadn't really considered much before tbh.
It's not a very complete/good answer, but I addressed this image on another post today where we can see the "start line"  preceeding it is m which we expect to see more line end than start. Might be worth a check of circular text in general, but it gives me the feeling at least some circular text follows line "rules".. ("preferences" is probably a better term..)