`underover` (ternary)

Underover

MathML

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <mstyle displaystyle="true">
    <munderover>
      <mi>x</mi>
      <mi>y</mi>
      <mi>z</mi>
    </munderover>
  </mstyle>
</math>

OMML

<m:oMathPara>
  <m:oMath>
    <m:limLow>
      <m:limLowPr>
        <m:ctrlPr>
          <w:rPr>
            <w:rFonts w:ascii="Cambria Math" w:hAnsi="Cambria Math"/>
            <w:i/>
          </w:rPr>
        </m:ctrlPr>
      </m:limLowPr>
      <m:e>
        <m:limUpp>
          <m:limUppPr>
            <m:ctrlPr>
              <w:rPr>
                <w:rFonts w:ascii="Cambria Math" w:hAnsi="Cambria Math"/>
                <w:i/>
              </w:rPr>
            </m:ctrlPr>
          </m:limUppPr>
          <m:e>
            <m:r>
              <m:t>x</m:t>
            </m:r>
          </m:e>
          <m:lim>
            <m:r>
              <m:t>z</m:t>
            </m:r>
          </m:lim>
        </m:limUpp>
      </m:e>
      <m:lim>
        <m:r>
          <m:t>y</m:t>
        </m:r>
      </m:lim>
    </m:limLow>
  </m:oMath>
</m:oMathPara>

UnicodeMath

x┬(z)┴(y)

Note	In other conversions, the generated output will resemble the content in the PowerBase class