<p class="">
    The format editors acknowledge existing best-practices for token naming, but place no direct constraints on naming via the specification.
  </p></div>

  <section id="additional-group-properties"><div class="header-wrapper"><h3 id="x6-1-additional-group-properties"><bdi class="secno">6.1 </bdi>Additional group properties</h3><a class="self-link" href="#additional-group-properties" aria-label="Permalink for Section 6.1"></a></div>
  <section id="description-0"><div class="header-wrapper"><h4