The documentation on MI interface

The documentation on MI interface

[Prashant Deva]

Hi.
The documentation on the MI interface doesnt list any of the output records
for when gdb stops due to say hitting a breakpoint or catching an exception.

So how do us people creating GUIs for it come to know of the possible ways
in which gdb can stop in the middle of the execution of a program and the
kind of output it gives?

Also does any gui that uses the mi interface coem under the gpl
automatically?

Thanks,
PRASHANT