eeds. It's purpose is to expose
            its specified parameter as an attribute.
          </p>
<h6>
<a name="spirit.qi.reference.auxiliary.attr.h1"></a>
            <span class="phrase"><a name="spirit.qi.reference.auxiliary.attr.header"></a></span><a class="link" href="attr.html#spirit.qi.reference.auxiliary.attr.header">Header</a>
          </h6>
<pre class="programlisting"><span class="comment">// forwards to &lt;boost/spirit/home/qi/auxiliary/attr.hpp&gt;</span>
<span class="preprocessor">#include<