There are some more things you can do with Message Facility.
By default a Messager can format all messages defined for itself and all its ancestors, but not of other messagers. For example, Messager
com.my.foocan format messages of Messagercom.my, but not messages defined for Messagercom.my.bar.However, it is still possible if you really want.
See a bad piece of text appeared, but don't know where is it in source? You just need this.
