Internationalized contents are destined to be shown to the software user, while their technical details are to be hidden by contrast.
But with Message Facility, the defining location of messages can be
revealed from the end user interface with a simple switch of Messager
configuration. This switch can be turned on/off as per Messager basis, by just
modifying the Messager's config meta resource at XPath messaging/@revealLocation.
For an exercise, try modify tutor/msg.meta, change messaging/@revealLocation
to true as:
<?xml version="1.0" encoding="UTF-8"?> <java> <messaging revealLocation="true" /> <logging level="CONFIG"> ..... </logging> </java>This snippet is from tutor/msg.meta
Then run the MsgViewer as described in the previous Running MsgViewer section, and you will
see the interface like this:

Yes, it is some ugly, but you get to know where the messages are.