The message explanation provides a description of the
variable information in the message text. See
IST messages for VTAM network operators IST001I – IST399I for descriptions of the following
messages.
Notes: - If you want the V4R1 messages to be displayed, you must indicate
MSGLVL=V4R1 as a start option, even though you are running on a VTAM® which is post-V4R1.
- If MSGLVL=V4R2 is specified as a start option, the base messages
that have no replacements will be displayed with the V4R1-level messages
and the V4R2-level messages.