Mathematical Markup Language
<?xml version="1.0"?>
<!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN"
"http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:m="http://www.w3.org/1998/Math/MathML"
>
<head>
<title>Fiat Lux</title>
</head>
<body>
<p>
And God said,
</p>
<m:math>
<m:mrow>
<m:msub>
<m:mi>δ</m:mi>
<m:mi>α</m:mi>
</m:msub>
<m:msup>
<m:mi>F</m:mi>
<m:mi>αβ</m:mi>
</m:msup>
<m:mi> </m:mi>
<m:mo>=</m:mo>
<m:mi></m:mi>
<m:mfrac>
<m:mrow>
<m:mn>4</m:mn>
<m:mi>π</m:mi>
</m:mrow>
<m:mi>c</m:mi>
</m:mfrac>
<m:mi> </m:mi>
<m:msup>
<m:mi>J</m:mi>
<m:mrow>
<m:mi>β</m:mi>
<m:mo> </m:mo>
</m:mrow>
</m:msup>
</m:mrow>
</m:math>
<p>
and there was light
</p>
</body>
</html>