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<?xml version="1.0"?> <!DOCTYPE doc [ <!ELEMENT doc EMPTY> <!ATTLIST doc defatt (0 | 1) "0"> <!ATTLIST doc xmlns:tst CDATA #FIXED "http://example.org"> <!ATTLIST doc tst:att (0 | 1) "1"> ]> <doc xmlns:tst="http://example.org" att="1"/>