Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/ibm/not-wf/P81/ibm81n08.xml
<?xml version="1.0" encoding="UTF/8"?> <!--* Illegal Charater in above EncName *--> <!DOCTYPE root [ <!ELEMENT root (#PCDATA)> <!ATTLIST root att CDATA #IMPLIED> ]> <root/>