Subtext · Comrak

$ comrak -e subtext -t commonmark -t xml

-# Some Subtext

<p><sub>Some Subtext</sub></p>

-# Some Subtext

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <subtext>
    <text xml:space="preserve">Some Subtext</text>
  </subtext>
</document>