multinewline3

W3C sample	WIRIS
	$$\begin{gathered} xxxxxxxxx \\ u+u+u+u+u+u+u+u+u+u+u+ \\ +u+u+u+u+u+u+u+u+u+u+u+u+u+u \end{gathered}$$

<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>
    <mi>u</mi>
    <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)