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+This example shows how to handle XML Schema polymorphism features such
+as xsi:type attributes and substitution groups in the C++/Parser mapping.
+The case when xsi:type is used on root elements is covered in the
+polyroot examples.
+
+The example consists of the following files:
+
+supermen.xsd
+  XML Schema which describes the "supermen" instance documents.
+
+supermen.xml
+  Sample XML instance document.
+
+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 first constructs a parser instance from
+  all the individual parsers found in supermen-pimpl.hxx. It then invokes
+  this parser instance to parse the input file.
+
+To run the example on the sample XML instance document simply execute:
+
+$ ./driver supermen.xml