content/test/data/accessibility/mac/methods/accessibility-columns.html

<!--
@SCRIPT:
  table.accessibilityColumns
-->
<!DOCTYPE html>
<table id="table" border=1>
  <tr>
    <th aria-label="Firstname">Firstname</th>
    <th aria-label="Lastname">Lastname</th>
  </tr>
  <tr>
    <td>Jill</td>
    <td>Smith</td>
  </tr>
</table>