<?xml version="1.0"?> <!-- file : examples/cxx/tree/polymorphism/supermen.xml author : Boris Kolpackov <boris@codesynthesis.com> copyright : not copyrighted - public domain --> <supermen xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="supermen.xsd"> <person> <name>John Doe</name> </person> <superman can-fly="false"> <name>James "007" Bond</name> </superman> <superman can-fly="true" wing-span="10" xsi:type="batman"> <name>Bruce Wayne</name> </superman> </supermen>