This is a technology demonstration of some of the extras in Mozilla but
not defined in the MathML spec, and not prevented by the spec either. They
are not portable and are meant to showcase a few interesting upshots from
building natively upon the browser environment.
Other renderers are expected to ignore attributes that
they don't understand while the behavior of undefined elements is
well, undefined.
Mouse over either log to see a tooltip showing the title
Rather than repeating the instructions,
some CSS might be used to provide a visual cue. For example
with the style rule: *[title] { color: blue; }
Mixing with other markups, e.g., <img>, <input>
Inline JavaScript
This page is typeset according to
XHTML,
the reformulated way to go for the web.
