    <td>Alternating columns</td><td><code>vis-even</code>, <code>vis-odd</code></td>
    </tr>
    <tr>
      <td>Current date</td><td><code>vis-today</code>, <code>vis-tomorrow</code>, <code>vis-yesterday</code>, <code>vis-current-week</code>, <code>vis-current-month</code>, <code>vis-current-year</code></td>
    </tr>
    <tr>
      <td>Hours</td><td><code>vis-h0</code>, <code>vis-h1</code>, ..., <code>vis-h23</code></td>
    </tr>
    <tr>
      <td>Grouped hours</td><td><code>vis-h0-h4</code> to <code>v