dir_munderover

This tests dir='rtl' on the munderover tag

W3C sample	WIRIS
	$\begin{array}{|ccc|}\hline \text{Test}& \text{Without dir}& \text{With dir=rtl}\\ \text{munderover (mo with movablelimits=true and displaystyle=false)}& \underset{b}{\overset{c}{A}}& \underset{b}{\overset{c}{A}}\\ \hline\end{array}$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mtable columnlines="solid" rowlines="solid" frame="solid" columnalign="center">
    <mtr>
      <mtd>
        <mtext>Test</mtext>
      </mtd>
      <mtd>
        <mtext style="width:40%">Without dir</mtext>
      </mtd>
      <mtd>
        <mtext style="width:40%">With dir=rtl</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>munderover (mo with movablelimits=true and displaystyle=false)</mtext>
      </mtd>
      <mtd>
        <munderover>
          <mo movablelimits="true">A</mo>
          <mi>b</mi>
          <mi>c</mi>
        </munderover>
      </mtd>
      <mtd>
        <mstyle dir="rtl">
          <munderover>
            <mo movablelimits="true">A</mo>
            <mi>b</mi>
            <mi>c</mi>
          </munderover>
        </mstyle>
      </mtd>
    </mtr>
  </mtable>
</math>

Author: Frédéric WANG