xhtml1-strict vs img src=".. border="..

4625 <[email protected]> Thu, 04 Mar 2010 23:03:23 -0800 (PST)
Newsgroups gmane.comp.web.html-tidy.user
Organization 4625
Message-ID <ySwbvvc6hqdnbPjMjJzSiAcCgKdsb8uq@4625>
Why tidy does not complain me about "border" attribute, which does not
exist for xhtml1-strict but present in my html file?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

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