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+This is a "Hello, world!" example that shows how to implement a very basic
+command line interface using CLI.
+
+The example consists of the following files:
+
+hello.cli
+ Command line interface description in the CLI language.
+
+hello.hxx
+hello.ixx
+hello.cxx
+ Command line interface implementation in C++. These files are generated
+ by the CLI compiler from hello.cli using the following command line:
+
+ cli hello.cli
+
+driver.cxx
+ Driver for the example. It first instantiates the option class which parses
+ the command line. The driver then examines the options and prints the
+ greeting string for each name passed as an argument.
+
+To run the example you can try the following command lines:
+
+$ ./driver --help
+$ ./driver John Jane
+$ ./driver --greeting Hi --exclamations 3 John Jane