"#exposing"></a></h2>
   <p>Each <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/custom-elements.html#autonomous-custom-element" id="ref-for-autonomous-custom-element">autonomous custom element</a> has <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="states-set">states set</dfn>, a
<a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ordered-set" id="ref-for-ordered-set">set</a> of strings, and the the custom element is initially associated with
an empty <a data-li