maction-04

Once you place mouse pointer over math expression below you should see its source code

W3C sample	WIRIS
	$$\frac{a}{b}\text{<mfrac><mi>a</mi><mi>b</mi></mfrac>}$$

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <maction actiontype="tooltip">
    <mrow>
      <mfrac>
        <mi>a</mi>
        <mi>b</mi>
      </mfrac>
    </mrow>
    <mtext>&lt;mfrac&gt;&lt;mi&gt;a&lt;/mi&gt;&lt;mi&gt;b&lt;/mi&gt;&lt;/mfrac&gt;</mtext>
  </maction>
</math>

Author: George Chavchanidze, Opera Software ASA