msubsup1

W3C sample	WIRIS
	${\int }_0^1{e}^{x}dx$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>
    <msubsup>
      <mo> &#x222B;</mo>
      <mn>0</mn>
      <mn>1</mn>
    </msubsup>
    <mrow>
      <msup>
        <mi> &#x2147;</mi>
        <mi>x</mi>
      </msup>
      <mo> &#x2062;</mo>
      <mrow>
        <mo> &#x2146;</mo>
        <mi>x</mi>
      </mrow>
    </mrow>
  </mrow>
</math>

Author: Wolfram Research