li><code>user.about.loading</code> or <code>user.about-loading</code></li>
</ol>
<p>Notice that <code>user.loading</code>, <code>user-loading</code>, <code>loading</code>, and <code>application-loading</code>
are not included here, Since <code>about</code> is the common parent for <code>index</code> and <code>slow-model</code>. This means we'll need to handle loading at every level
within the route hierarchy where loading feedback is important.</p>
</section>
<h3 id="toc_the-loading-event">The <code>loading