texmath-0.6.7: tests/src/munder-10.mml
<?xml version="1.0" encoding="UTF-8"?>
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <munder> <mi mathvariant="normal">B</mi> <mi mathvariant="normal">long under script</mi> </munder> <mo>=</mo> <munder> <mrow> <mphantom> <mtext>x</mtext>
</mphantom>
<mi mathvariant="normal">B</mi>
<mphantom>
<mtext>x</mtext>
</mphantom>
</mrow> <mrow> <mi mathvariant="normal">long under script</mi>
</mrow> </munder> </math>