el">-label <var>string</var></a></td>
    <td>assign a label to an image</td>
  </tr>

  <tr>
    <td><a href="command-line-options.html#lat">-lat <var>geometry</var></a></td>
    <td>local adaptive thresholding</td>
  </tr>

  <tr>
    <td><a href="command-line-options.html#layers">-layers <var>method</var></a></td>
    <td>optimize or compare image layers</td>
  </tr>

  <tr>
    <td><a href="command-line-options.html#level">-level <var>value</var></a></td>
    <td>adjust the level of image contrast</td>
