class="link" href="compound_attributes.html#spirit_x3.abstracts.compound_attributes.the_attribute_of_alternative_parsers">The
        Attribute of Alternative Parsers</a>
      </h5>
<p>
        Alternative parsers are all about - well - alternatives. In order to store
        possibly different result (attribute) types from the different alternatives
        we use the data type <a href="http://www.boost.org/doc/html/variant.html" target="_top">Boost.Variant</a>.
        The main attribute propagation rule