texmath-0.7: tests/writers/mphantomBoperators3.mml
<?xml version='1.0' ?>
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
<mrow>
<mi>A</mi>
<mo>+</mo>
<mi>A</mi>
<mphantom>
<mo>+</mo>
</mphantom>
<mi>A</mi>
</mrow>
</math>