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+This example shows how to use the optional wildcard mapping provided
+by C++/Tree to parse, access, modify, and serialize the XML data
+matched by XML Schema wildcards (any and anyAttribute). For an
+alternative approach that employes type customization see the
+custom/wildcard example.
+
+The example consists of the following files:
+
+email.xsd
+  XML Schema which describes a simple email format with the
+  extensible envelope type.
+
+email.xml
+  Sample email message.
+
+email.hxx
+email.ixx
+email.cxx
+  C++ types that represent the given 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 files are generated by the XSD compiler from email.xsd using the
+  following command line:
+
+  xsd cxx-tree --generate-wildcard --generate-serialization \
+      --root-element message email.xsd
+
+  Note that the --generate-wildcard option is used to request the
+  wildcard mapping.
+
+driver.cxx
+  Driver for the example. It first calls one of the parsing functions
+  that constructs the object model from the input file. It then prints
+  the content of the object model to STDERR. Next the driver creates a
+  reply email which is then serialized to XML.
+
+To compile and link the example manually from the command line we can use
+the following commands (replace 'c++' with your C++ compiler name):
+
+c++ -DXSD_CXX11 -c email.cxx
+c++ -DXSD_CXX11 -c driver.cxx
+c++ -o driver driver.o email.o -lxerces-c
+
+Note that we need to define the XSD_CXX11 preprocessor macro since the
+source code includes libxsd headers directly.
+
+To run the example on the sample XML instance document execute:
+
+./driver email.xml