<<< mml
<?xml version="1.0" encoding="UTF-8"?>

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mtable frame="solid" width="200px">
    <mtr>
      <mtd>
        <mn>1</mn> 
      </mtd> 
      <mtd>
        <mn>2</mn> 
      </mtd> 
    </mtr> 
    <mtr>
      <mtd>
        <mi>x</mi> 
      </mtd> 
      <mtd>
        <mi>y</mi> 
      </mtd> 
    </mtr> 
  </mtable> </math>
>>> native
[ EArray
    [ AlignCenter , AlignCenter ]
    [ [ [ ENumber "1" ] , [ ENumber "2" ] ]
    , [ [ EIdentifier "x" ] , [ EIdentifier "y" ] ]
    ]
]