ass="computeroutput"><a class="link" href="basic_default_domain.html" title="Struct basic_default_domain">proto::basic_default_domain</a></code>
                is weaker than
                <code class="computeroutput"><a class="link" href="default_domain.html" title="Struct default_domain">proto::default_domain</a></code>.
              </li>
<li class="listitem">
                For each child, define a set of domains <span class="emphasis"><em>S<sub>N</sub></em></span>
                that includes the