mixed4

multiple newlines in an mrow with green mathbackgrounds

W3C sample	WIRIS
	$x x x x x x x x x u + u + u + u + u + u + u + u + u + u + u + + u + u + u + u + u + u + u + u + u + + u + u + u + u$

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <mstyle mathbackground="#90EE90">
    <mi>x</mi>
    <mi>x</mi>
    <mi>x</mi>
    <mi>x</mi>
    <mi>x</mi>
    <mi>x</mi>
    <mi>x</mi>
    <mi>x</mi>
    <mi>x</mi>
    <mspace linebreak="newline"/>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mspace linebreak="newline"/>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mspace linebreak="newline"/>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
    <mo>+</mo>
    <mi>u</mi>
  </mstyle>
</math>

Author: Design Science, Inc. (D. Doyle, E. Cannon, R.Miner)