This content handler forwards to another “target” Mojo application. The content handler reads the target application's URL from the initial URL and then connects to it.
If you change the sample.fch file in this directory so that it contains a legitimate Mojo application URL, then to run this appllication with mojo_shell, set DIR to be the absolute path for this directory, then:
mojo_shell “file://$DIR/sample.fch”