seealso tag is used to list related terms
that you believe are beneficial to the reader of the document.
This CNXML:
<definition id='quarter-def'>
<term>quarter</term>
<meaning id="meaning-money">
25 cents; a quarter of a dollar.
</meaning>
<seealso>
<term>dollar</term>
<term>penny</term>
</seealso>
</definition>
Results in this display: