some

mathTable1

3x3 table with a solid frame and dashed row/col lines. The rows should be top/baseline/bottom aligned, and the cols should be left/right/right aligned. There should be 4em spacing between cols and 3ex spacing between rows.

W3C sample	WIRIS
	$\begin{matrix} \frac{xxx}{y} & bbbb & c \\ \frac{x}{y} & y & z \\ \frac{x}{y} & 2 & 333333 \end{matrix}$

<math xmlns="http://www.w3.org/1998/Math/MathML" frame="solid" columnlines="dashed" rowlines="dashed" rowalign="top baseline bottom" columnalign="left right" columnspacing="4em" rowspacing="3ex">
  <mtable>
    <mtr>
      <mtd>
        <mfrac>
          <mi>xxx</mi>
          <mi>y</mi>
        </mfrac>
      </mtd>
      <mtd>
        <mi>bbbb</mi>
      </mtd>
      <mtd>
        <mi>c</mi>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mfrac>
          <mi>x</mi>
          <mi>y</mi>
        </mfrac>
      </mtd>
      <mtd>
        <mi>y</mi>
      </mtd>
      <mtd>
        <mi>z</mi>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mfrac>
          <mi>x</mi>
          <mi>y</mi>
        </mfrac>
      </mtd>
      <mtd>
        <mn>2</mn>
      </mtd>
      <mtd>
        <mn>333333</mn>
      </mtd>
    </mtr>
  </mtable>
</math>

Author: Design Science, Inc. Neil Soiffer