class2

class attribute

W3C sample	WIRIS
	$\frac{x}{2}$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mfrac>
    <mi class="identifiers">x</mi>
    <mn class="numbers">2</mn>
  </mfrac>
</math>

Author: Design Science, Inc. (D. Doyle, R.Miner)