Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/ibm/valid/P52/out/ibm52v01.xml
<root> <a> Element type a </a> <b battr1="anyvalue" battr3="fixedvalue" battr4="def"> test P52 and P53 </b> </root>