Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/eduni/namespaces/1.0/045.xml
<?xml version="1.0"?> <!-- Colon in ID attribute name --> <!DOCTYPE foo [ <!ELEMENT foo ANY> <!ATTLIST foo id ID #REQUIRED> ]> <foo id="a:b"/>
