Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/ibm/not-wf/P23/ibm23n03.xml
<?xml encoding='ASCII' standalone='yes' version='1.0'?> <!DOCTYPE doc [ <!ELEMENT doc EMPTY> ]> <doc/> <!-- Wrong ordering EncodingDecl, SDDecl, and VersionInfo in XMLDecl -->