mfrac-07.test

<<< native
[ EFraction
    NormalFrac
    (EFraction
       NormalFrac
       (EOver False (EIdentifier "a") (EPhantom (EText TextNormal "!")))
       (EIdentifier "b"))
    (EFraction NormalFrac (EIdentifier "c") (EIdentifier "d"))
, ESymbol Rel "="
, EFraction
    NormalFrac
    (EFraction NormalFrac (EIdentifier "a") (EIdentifier "b"))
    (EFraction
       NormalFrac
       (EIdentifier "c")
       (EUnder False (EIdentifier "d") (EPhantom (EText TextNormal "!"))))
]
>>> mml
<?xml version='1.0' ?>
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>
    <mfrac>
      <mfrac>
        <mover>
          <mi>a</mi>
          <mphantom>
            <mtext mathvariant="normal">!</mtext>
          </mphantom>
        </mover>
        <mi>b</mi>
      </mfrac>
      <mfrac>
        <mi>c</mi>
        <mi>d</mi>
      </mfrac>
    </mfrac>
    <mo>=</mo>
    <mfrac>
      <mfrac>
        <mi>a</mi>
        <mi>b</mi>
      </mfrac>
      <mfrac>
        <mi>c</mi>
        <munder>
          <mi>d</mi>
          <mphantom>
            <mtext mathvariant="normal">!</mtext>
          </mphantom>
        </munder>
      </mfrac>
    </mfrac>
  </mrow>
</math>