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+This example shows how to handle the xsi:type attributes when it is used
+on root elements. For general coverage of XML Schema polymorphism handling
+in the C++/Parser mapping see the polymorphism example.
+
+The example consists of the following files:
+
+supermen.xsd
+  XML Schema which describes the "supermen" instance documents.
+
+person.xml
+superman.xml
+batman.xml
+  Sample XML instance documents.
+
+supermen-pskel.hxx
+supermen-pskel.cxx
+  Parser skeletons generated by the XSD compiler from supermen.xsd.
+  Note the use of the --generate-polymorphic command line option.
+
+supermen-pimpl.hxx
+supermen-pimpl.cxx
+  Parser implementations that print the XML data to STDOUT.
+
+driver.cxx
+  Driver for the example. It implements a custom document parser
+  that determines which XML Schema type is being parsed and uses
+  the corresponding parser implementation. The driver first
+  constructs a parser instance from all the individual parsers
+  found in supermen-pimpl.hxx. In then invokes this parser instance
+  to parse the input file.
+
+To run the example on the sample XML instance documents simply execute:
+
+$ ./driver person.xml
+$ ./driver superman.xml
+$ ./driver batman.xml