Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/oasis/p04pass1.xml
<doc> <abcdefghijklmnopqrstuvwxyz/> <ABCDEFGHIJKLMNOPQRSTUVWXYZ/> <A01234567890/> <A.-:̀·/> </doc>