ode>)</a>
</h5></div></div></div>
<h6>
<a name="spirit.qi.reference.auxiliary.attr.h0"></a>
            <span class="phrase"><a name="spirit.qi.reference.auxiliary.attr.description"></a></span><a class="link" href="attr.html#spirit.qi.reference.auxiliary.attr.description">Description</a>
          </h6>
<p>
            The Attribute parser does not consume any input, for this reason it always
            matches an empty string and always succeeds. It's purpose is to expose
            its specified paramet