mpadded-inheritance1

mpadded attributes can't be set from mstyle

W3C sample	WIRIS
	$$x+y=x+y$$

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <mstyle mathbackground="yellow">
    <mpadded>
      <mi>x</mi>
      <mo>+</mo>
      <mi>y</mi>
    </mpadded>
  </mstyle>
  <mo>=</mo>
  <mstyle mathbackground="yellow" height="5pt" depth="5pt" width="10pt" lspace="5pt">
    <mpadded>
      <mi>x</mi>
      <mo>+</mo>
      <mi>y</mi>
    </mpadded>
  </mstyle>
</math>

Author: Robert Miner, Design Science, Inc.