Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/ibm/valid/P15/ibm15v04.xml
<?xml version="1.0"?> <!DOCTYPE student [ <!ELEMENT student (#PCDATA)> ]> <!--student phone number 408-398 (387)-4758 --> <student>My Name is SnowMan. </student>