<hr />
  <p><a name="diff"></a>
  This form allows you to request diffs between any two revisions of this file.
  For each of the two "sides" of the diff,
  enter a numeric revision.
  </p>
  <form method="get" action="[diff_select_action]" id="diff_select">

  <table cellpadding="2" cellspacing="0" class="auto">
  <tr>
  <td>&nbsp;</td>
  <td>
  [for diff_select_hidden_values]<input type="hidden" name="[diff_select_hidden_values.name]" value="[diff_select_hidden_values.value]"/>[end]
  Diffs between
  <input type="text" size="12" name="r1"
         value="[if-any rev_selected][rev_selected][else][first_revision][end]" />

  and
  <input type="text" size="12" name="r2" value="[last_revision]" />
  </td>
  </tr>
  <tr>
  <td>&nbsp;</td>
  <td>
  Type of Diff should be a
  <select name="diff_format" onchange="submit()">
    <option value="h" [is diff_format "h"]selected="selected"[end]>Colored Diff</option>
    <option value="u" [is diff_format "u"]selected="selected"[end]>Unidiff</option>
  </select>
  <input type="submit" value="  Get Diffs  " />
  </td>
  </tr>
  </table>
  </form>