https://www.mathml.com/ 2026-04-05T15:11:44+00:00 https://www.mathml.com/ https://www.mathml.com/lib/tpl/wirismml/images/favicon.ico text/html 2015-12-22T12:19:26+00:00 https://www.mathml.com/testsuite/topics/bidi/start?rev=1450786766&do=diff BiDi Bidirectional layout features are mainly used for RTL (Right-To-Left) languages, and to support W3C Arabic mathematical notation. WIRIS_editor fully implements it. Discrepancies between the examples and the W3C samples are due to: * WIRIS_editor does not fully support all the Unicode symbols; it relies on the font you are using, and some fonts don't have all Arabic characters. See