This field lists the message set projects that are available
in your workspace. By clicking on the '+' symbol to the left of the project,
these expand to list the message sets that are available for you to select
from the active working set. Depending on how you started the New
message definition file wizard, a message set might be preselected
for you, but this does not prevent you from selecting a different message
set if you prefer.
File name
Specify the name of the message definition file that you are creating.