encoding[4] annotation-xml 要素もあります。
[5] annotation-xml 要素と metadata
要素が似ているように、 annotation 要素と
meta 要素も似ています。
[6] <semantics> - MathML | MDN ( ()) <https://developer.mozilla.org/ja/docs/Web/MathML/Element/semantics>
<!-- annotate an image -->
<annotation encoding="image/png" src="some/path/formula.png"/>
<!-- annotate TeX -->
<annotation encoding="application/x-tex">
x^{2} + y
</annotation>
[7] SnuggleTeX - MathML Semantic Enrichment Demo ( (David McKain著, )) <http://www2.ph.ed.ac.uk/snuggletex/UpConversionDemo>
</mfrac>
<annotation encoding="SnuggleTeX">\[ \frac{2f(x)-e^x}{\sin xy^2(x-2)} \]</annotation>
</semantics>
[8] SnuggleTeX - MathML Semantic Enrichment Demo ( (David McKain著, )) <http://www2.ph.ed.ac.uk/snuggletex/UpConversionDemo>
<annotation encoding="SnuggleTeX">\[ \frac{2f(x)-e^x}{\sin xy^2(x-2)} \]</annotation>
<annotation encoding="LaTeX">\[ \frac{2f(x)-e^x}{\sin xy^2(x-2)} \]</annotation>
<annotation encoding="Maxima">((2 * f(x)) - exp(x)) / sin((x * (y^2) * (x - 2)))</annotation>
<annotation-xml encoding="SnuggleTeX-upconversion-options">
<s:upconversion-options xmlns:s="http://www.ph.ed.ac.uk/snuggletex">
[9] Bug 100626 – Full support for semantics element ( ()) <https://bugs.webkit.org/show_bug.cgi?id=100626>