ibe
    an exception that can be raised by the costructor.</td></tr>

  <!-- ========== Variables ========== -->
  <tr><th colspan="2" align="left">Variables
  <i>(module, class or <a href="#variable-docstring">variable</a> docstrings)</i></th></tr>
  <tr><td width="10%" align="left" valign="top">
  <code>@<b>ivar</b>&nbsp;<i>v</i>:</code>&nbsp;... </td><td>
    A description of the class instance variable
    <code><i>v</i></code>. </td></tr>
  
  <tr><td width="10%" align="left" valign="top">
  <code>@<b>