To create an application message catalog, you first produce a source
file that contains directives (comment records, set records, and
message numbers), messages, and special characters (&,
%, ~, and !).
Messages are identified by message and set number and may have
run-time parameters inserted when accessed.
After deciding on a naming convention, if you have Native Language
Support (NLS) considerations, the
source message catalog is then formatted by the GENCAT utility.
The GENCAT program can be run by a job and sets JCWs to
indicate success or failure of operations.
The formatted message is accessed by the application program which
then inserts run-time parameters and outputs messages to the user.
This access is described in Chapter 3.
