>
      </tr>
    </table>

    <h3><a name="grpd_iter_oprs">Grouped Iterator Operators</a></h3>

    <p>There are five iterator operator class templates, each for a different
    category of iterator. The following table shows the operator groups for
    any category that a custom iterator could define. These class templates
    have an additional optional template parameter <code>B</code>, which is
    not shown, to support <a href="#chaining">base class chaining</a>.</p>

    <table cellpadding="5" borde