hin this specification or required by
this specification through normative reference, it must do so in
ways consistent with the facilities' definition.</li>

<li>When a user agent processes an XHTML document as generic XML,
it shall only recognize attributes of type
<code>ID</code> (e.g. the <code>id</code> attribute on most XHTML elements)
as fragment identifiers.</li>

<li>If a user agent encounters an element it does not recognize,
it must render the element's content.</li>

<li>If a user agent encounter