ier>scanner_policies</span><span class=special>&lt;&gt; </span><span class=special>&gt;
    </span><span class=keyword>class </span><span class=identifier>scanner</span><span class=special>;
</span></code></pre>
<p> The scanner in turn inherits from the PoliciesT.</p>
<a name="rebinding_policies"></a>
<h3>Rebinding Policies</h3>
<p> The scanner can be made to rebind to a different set of policies anytime. 
  It has a member function <tt>change_policies(new_policies)</tt>. Given a new 
  set of policies, thi