<!DOCTYPE doc [ <!ELEMENT doc EMPTY> <!ATTLIST doc
defatt (0|1) "0" xmlns:tst CDATA #FIXED "http://example.org" tst:att (0|1) "1">
]> <doc att=“1”/>
<!DOCTYPE doc [ <!ELEMENT doc EMPTY> <!ATTLIST doc
defatt (0|1) "0" xmlns:tst CDATA #FIXED "http://example.org" tst:att (0|1) "1">
]> <doc att=“1”/>