<?xml version="1.0" ?>
<!DOCTYPE foo [
<!ELEMENT foo EMPTY>
<!ATTLIST foo
    xmlns CDATA #FIXED "http://example.com/fooo"
    xmlns:foo CDATA #REQUIRED
    foo:info CDATA #IMPLIED>
]>
<foo xmlns="http://example.com/foo" xmlns:foo="http://example.com/fo" foo:info="toto"/>