 the manifest.
      </p>
      <aside class="issue">
        <p>
          TO DO: This is draft text for features that might belong in other
          specifications. This document might not be the final venue for some
          of the work specified in this draft. (manifest/manifest incubations)
        </p>
      </aside>
    </section>
    <section>
      <h2>
        <dfn>Title bar area environmental variables</dfn>
      </h2>
      <aside class="issue">
        <p>
          TO DO: This is draft text