If you need to attach some additional commodities objects
to your application (e.g. because you need lots of hotkeys),
you can obtain a pointer to the applications Broker structure
and add some commodities objects.
MUI will free the complete broker when the application is
disposed, no need for you to free your objects yourself.
To receive input from your objects, you will also need to
install a MUIA_Application_BrokerHook.