moAmovable15

W3C sample	WIRIS
	$\sum _x^0=\sum _x^0=\sum _x^0={\displaystyle \sum _x^0=\sum _x^0=\sum _x^0}$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>
    <munderover>
      <mo>&#x2211;</mo>
      <mi>x</mi>
      <mn>0</mn>
    </munderover>
    <mo>=</mo>
    <munderover>
      <mo movablelimits="true">&#x2211;</mo>
      <mi>x</mi>
      <mn>0</mn>
    </munderover>
    <mo>=</mo>
    <munderover>
      <mo movablelimits="false">&#x2211;</mo>
      <mi>x</mi>
      <mn>0</mn>
    </munderover>
    <mo>=</mo>
    <mstyle displaystyle="true">
      <munderover>
        <mo>&#x2211;</mo>
        <mi>x</mi>
        <mn>0</mn>
      </munderover>
      <mo>=</mo>
      <munderover>
        <mo movablelimits="true">&#x2211;</mo>
        <mi>x</mi>
        <mn>0</mn>
      </munderover>
      <mo>=</mo>
      <munderover>
        <mo movablelimits="false">&#x2211;</mo>
        <mi>x</mi>
        <mn>0</mn>
      </munderover>
    </mstyle>
  </mrow>
</math>

Author: Robert Miner and Jeff Schaefer, Geometry Technologies