href2

test of href attribute on two token elements (Pi and 1)

W3C sample	WIRIS
	$π + 1$

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <mi href="http://en.wikipedia.org/wiki/Pi">&#x03c0;</mi>
  <mo>+</mo>
  <mn href="http://www.youtube.com/watch?v=pUlw3ACdN5s">1</mn>
</math>

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