They sure do, I added the Unicode superscript and subscript variant to that bin page, it's much more compact than the HTML element super and subscripts. I wond

They sure do, I added the Unicode superscript and subscript variant to that bin page, it's much more compact than the HTML element super and subscripts. I wonder what screenreader support is like for the Unicode vulgar fractions, the HTML, and the all-Unicode variants. Apple's VoiceOver correctly reads the Unicode 'fraction slash' and superscript and subscript numbers. Now that I'm thinking about it, using superscript and subscript with fraction slash visually displays a fraction as we expect but is not semantically correct; unmodified ASCII numbers separated by 'fraction slash' would more accurately represent the numerators and denominators.