Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/ibm/valid/P32/ibm32v02.xml
<?xml version="1.0" standalone="no" ?> <!DOCTYPE animal SYSTEM "ibm32v02.dtd"> <animal>&animal_content;</animal> <!-- Tests VC: Standalone Document Declaration with external enitity reference and standalone is no -->