Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/ibm/valid/P50/out/ibm50v01.xml
<root><a></a><b> <c><child1><a></a><b></b><c></c></child1></c> <c><child2><a></a><b></b><c></c></child2></c> content of b element </b></root>