failed

ElementaryMathExamples-mstack15

test for : mstack align="top 2"

W3C sample	WIRIS
	$010 111 zzzzz$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mstack align="top 2">
    <msline/>
    <mn>010</mn>
    <msline/>
    <mn>111</mn>
    <msline/>
  </mstack>
  <mi>zzzzz</mi>
</math>

Author: Yecheng Gu