Answer: this page is ancient and unmaintained. That line’s from late 2017. Chromium only shipped its implementation in early 2023, and back then you also had Ed

Answer: this page is ancient and unmaintained. That line’s from late 2017. Chromium only shipped its implementation in early 2023, and back then you also had EdgeHTML to consider. Wayback Machine investigation: from the first capture in https://web.archive.org/web/20141227061758/http://asciimath.org/ https://web.archive.org/web/20141227061758/http://asciimath.... until https://web.archive.org/web/20171213211317/http://asciimath.org/ https://web.archive.org/web/20171213211317/http://asciimath...., that line read: > As HTML5 including MathML has currently become an official recommendation, the remaining browsers are likely to follow with first implementations soon! Then, finally accepting that Google did not intend to support MathML, by https://web.archive.org/web/20171113100326/http://asciimath.org/ https://web.archive.org/web/20171113100326/http://asciimath...., they changed it to what you read today: > While HTML5 now includes MathML as an official recommendation, the remaining browsers do not appear to be implementing it. For widest browser compatibility, the use of MathJax is recommended. Since then, Edge has abandoned its own engine in favour of Chromium, and Igalia has driven MathML with the end result of MathML Core (a reduced and better-specified subset of MathML) and an implementation in Chromium.