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+This example shows how to customize the anyType XML Schema built-in
+type to implement preservation of comments stored in XML documents.
+Because anyType is a base type for every generated type, you can use
+this technique to implement custom functionality that spans the
+entire type system. For more information on the C++/Tree mapping
+customization see the C++/Tree Mapping Customization Guide[2].
+
+[2] http://wiki.codesynthesis.com/Tree/Customization_guide
+
+The example consists of the following files:
+
+people.xsd
+  XML Schema definition for a simple person record vocabulary.
+
+people.xml
+  Sample XML instance document.
+
+xml-schema.hxx
+  C++ types for XML Schema built-in types. This header file is generated
+  by XSD using the --generate-xml-schema option. The --custom-type option
+  is also used to customize the xsd:anyType type.
+
+people.hxx
+people.ixx
+people.cxx
+  C++ types that represent the person record vocabulary, a set of
+  parsing functions that convert XML instance documents to a tree-like
+  in-memory object model, and a set of serialization functions that
+  convert the object model back to XML. These are generated by XSD
+  from people.xsd with the --extern-xml-schema option in order to
+  include xml-schema.hxx.
+
+xml-schema-custom.hxx
+  Header file which defines our own xml_schema::type class. It is
+  included at the end of xml-schema.hxx using the --hxx-epilogue
+  option.
+
+xml-schema-custom.cxx
+  Source file which contains the implementation of our xml_schema:type
+  class.
+
+dom-parse.hxx
+dom-parse.cxx
+  Definition and implementation of the parse() function that
+  parses an XML document to a DOM document while preserving
+  XML comments.
+
+driver.cxx
+  Driver for the example. It first calls the above parse() function
+  to parse the input file to a DOM document. It then parses the DOM
+  document to the object model and performs a number of modifications
+  on this object model. Finally, it serializes the modified object
+  model back to XML, including XML comments.
+
+To run the example on the sample XML instance document simply execute:
+
+$ ./driver people.xml