There are a number of
<acronym>XHTML
</acronym> <acronym>FPI
</acronym>s, depending upon the version, or
<emphasis>level
</emphasis> of
<acronym>XHTML
</acronym> to which a document conforms. Most
<acronym>XHTML
</acronym> documents on the FreeBSD web site comply with the transitional version of
<acronym>XHTML
</acronym> 1.0.