 class="tocline">5.1 <a href="#media">Internet Media Types</a></li>
</ul>
</li>

<li class="tocline">6. <a href="#future">Future Directions</a> 

<ul class="toc">
<li class="tocline">6.1 <a href="#mods">Modularizing HTML</a></li>

<li class="tocline">6.2 <a href="#extensions">Subsets and Extensibility</a></li>

<li class="tocline">6.3 <a href="#profiles">Document Profiles</a></li>
</ul>
</li>

<li class="tocline"><a href="#dtds">Appendix A. DTDs</a></li>

<li class="tocline"><a href="#prohibitions">Appendix