re a substantial component
  was shared across implementations the features supported by that
  component were only counted once.
</p>
<div id="systems-impl">
  <!-- system implementation descriptions will be inserted here -->
</div>

<h2 id="h_security"><a id="security" name="security">7. Security</a></h2>
<p>
  The
  <a href="https://www.w3.org/TR/wot-thing-description">Web of Things (WoT) Thing Description</a>
  specification includes features to support security.
  Functional aspects of assertions assoc