It&#x27;s also referenced rather beautifully in bobince&#x27;s contemporary masterpiece of regex-related despair:<p><a href="http:&#x2F;&#x2F;stackoverflow.com&#x2F;questions&#x2F;1732348&#x2F;regex-match-open-tags-except-xhtml-self-contained-tags" rel="nofollow">http:&#x2F;&#x2F;stackoverflow.com&#x2F;questions&#x2F;1732348&#x2F;regex-match-open-...</a><p>(&quot;The &lt;center&gt; cannot hold&quot;...)