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

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">

-- 
/4625           () кампания ascii ribbon - против писем в html формате
                /\ www.asciiribbon.org   - против проприетарных вложений

Received on Friday, 5 March 2010 07:03:58 UTC