miSfontsize9

W3C sample	WIRIS
	$\begin{matrix} A + A + A + A + A + A \\ A + A + A + A + A + A + A + A \end{matrix}$

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  <mtable>
    <mtr>
      <mtd>
        <mstyle fontweight="bold" color="#ff0000">
          <mrow>
            <mi>A</mi>
            <mo>+</mo>
            <mi fontweight="normal" fontstyle="italic">A</mi>
            <mo>+</mo>
            <mstyle fontsize="0.1in">
              <mi>A</mi>
              <mo>+</mo>
              <mi fontsize="2em">A</mi>
              <mo>+</mo>
              <mi fontsize="36pt">A</mi>
            </mstyle>
            <mo>+</mo>
            <mi fontsize="20mm">A</mi>
          </mrow>
        </mstyle>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mstyle mathcolor="#ff0000">
          <mrow>
            <mi>A</mi>
            <mo>+</mo>
            <mstyle mathsize="0.1in">
              <mi>A</mi>
              <mo>+</mo>
              <mi mathsize="2em">A</mi>
              <mo>+</mo>
              <mi mathsize="36pt">A</mi>
            </mstyle>
            <mo>+</mo>
            <mi mathsize="20mm">A</mi>
            <mo>+</mo>
            <mstyle mathsize="big">
              <mi>A</mi>
              <mo>+</mo>
              <mi mathsize="small">A</mi>
              <mo>+</mo>
              <mi mathsize="normal">A</mi>
            </mstyle>
          </mrow>
        </mstyle>
      </mtd>
    </mtr>
  </mtable>
</math>

Author: Robert Miner and Jeff Schaefer, Geometry Technologies; Neil Soiffer, Wolfram Research