blue-shift">-blue-shift  <var>factor</var></a></td>
    <td>simulate a scene at nighttime in the moonlight</td>
  </tr>

  <tr>
    <td><a href="command-line-options.html#blur">-blur <var>geometry</var></a></td>
    <td>reduce image noise and reduce detail levels</td>
  </tr>

  <tr>
    <td><a href="command-line-options.html#border">-border <var>geometry</var></a></td>
    <td>surround image with a border of color</td>
  </tr>

  <tr>
    <td><a href="command-line-options.html#bordercolor">-bordercolor <va