&gt;  NB. appears to be the comment marker<p>Likely in reference to <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Nota_bene" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Nota_bene</a>