Stix currently uses combining characters, MathML non combining. epsilon variants. MathML wrong? phi variants. MathML wrong following Unicode 3.0 usage? phi variants. MathML wrong following Unicode 3.0 usage? MathML has hyphen, Stix has figure dash (I think Stix is right). MathML (and 9573) have this as nvHarr which was probably a typo, stix has it as nvhArr MathML (and 9573) have this as dzigrarr which was probably a typo, stix has it as xzigrarr Gt in Stix and 9573 doc has double >> with all four ends in a vertical line, MathML currently has >>. MathML change? MathML has hyphen, Stix has figure dash (I think Stix is right). MathML defines isin incorrectly for HTML compat This skews variant and negated forms. HTML compatibility Stix is right, but see rang. MathMl should change. MathML currently only has the correct spelling, should have this plank spelling as well, for compatibility with ISO. I think MML is right but 9573 sample has an "almost closed" arrow, so stix went for closed rather than open,