.
These are suppressed with their content just printed out (if the tag has any
sense, typically text content).
Here is the list of these tags:
</p>

<div class="diagram">
  <b>Unsupported Doxygen tags</b>

  <ul style="list-style-type:none;column-count:4;">
    <li>\addindex</li>
    <li>\addtogroup</li>
    <li>\anchor</li>
    <li>\attention</li>
    <li>\brief</li>
    <li>\bug</li>
    <li>\callergraph</li>
    <li>\callgraph</li>
    <li>\category</li>
    <li>\class</li>
    <li>\copybrief</li>
    <l