Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/oasis/p01pass3.xml
<doc> <a><b><c/></b></a> </doc> <!-- comment after document element--> <?PI after document element?> <!-- comment after document element--> <?PI after document element?> <!-- comment after document element--> <?PI after document element?>
