op">adaptor</a>
      class template, which is specially designed to take advantage of as much of
      the underlying type's behavior as possible.
    </p>
<p>
      Both <a href="../iterator_facade.html" target="_top">facade</a> and <a href="../iterator_adaptor.html" target="_top">adaptor</a>
      as well as many of the <a class="link" href="iterator/specialized.html" title="Specialized Adaptors">specialized adaptors</a>
      mentioned below have been proposed for standardization (<a href="../facade-and