Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/oasis/p26pass1.xml
<?xml version="1.0"?> <!--because we are testing conformace to XML 1.0, there can be no exhaustive tests of the VersionNum production. The only VersionNum a 1.0-compliant processor is required to pass is "1.0" --> <doc/>