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+This example shows how to handle XML vocabularies with multiple
+root elements using the C++/Tree mapping.
+
+See also the messaging example for an alternative approach that
+uses the element type and element map features of the C++/Tree
+mapping.
+
+The example consists of the following files:
+
+protocol.xsd
+  XML Schema which defines a simple bank account protocol with
+  requests such as withdraw and deposit.
+
+balance.xml
+withdraw.xml
+deposit.xml
+  Sample XML instances for the protocol requests.
+
+protocol.hxx
+protocol.cxx
+  C++ types that represent the given vocabulary and a set of
+  parsing functions that convert XML documents to a tree-like
+  in-memory object model. These are generated by XSD from
+  protocol.xsd.
+
+dom-parse.hxx
+dom-parse.cxx
+  Definition and implementation of the parse() function that
+  parses an XML document to a DOM document.
+
+driver.cxx
+  Driver for the example. It first calls the above parse() function
+  to parse the input file to a DOM document. It then determines the
+  type of request being handled and calls the corresponding parsing
+  function that constructs the object model from this DOM document.
+  Finally, it prints the content of this object model to STDERR.
+  This example intentionally does not support the deposit request
+  to show how to handle unknown documents.
+
+To run the example on the sample XML request documents simply
+execute:
+
+$ ./driver balance.xml
+$ ./driver withdraw.xml
+$ ./driver deposit.xml