mactionBstatus1.mml

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

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <maction actiontype="statusline">
    <mrow>
      <mn>2</mn> 
      <mo>+</mo> 
      <mi>x</mi> 
    </mrow> 
    <mtext>Add 2 to the value of x</mtext> 
  </maction> </math>