td>
    <td>preferred number of colors in the image</td>
  </tr>

  <tr>
    <td><a href="command-line-options.html#colorspace">-colorspace <var>type</var></a></td>
    <td>set image colorspace</td>
  </tr>

  <tr>
    <td><a href="command-line-options.html#combine">-combine</a></td>
    <td>combine a sequence of images</td>
  </tr>

  <tr>
    <td><a href="command-line-options.html#comment">-comment <var>string</var></a></td>
    <td>annotate image with comment</td>
  </tr>

  <tr>
    <td><a href="command