Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/ibm/not-wf/P62/ibm62n08.dtd
<?xml version="1.0" encoding='UTF-8'?> <!ELEMENT animal ANY> <!ELEMENT tiger ANY> <!-- DTD for Production 62--> <![INCLUDE[ ]> <!--Negtive test with pattern8 of P62--> <!--Missing one "]" in closing sequence.-->