This section includes the text and variable field lengths of messages with text changes.
old: IST2337I CHPID TYPE = %3 CHPID = %2
new: IST2337I CHPID TYPE = %3 CHPID = %2 PNETID = %16
old: ISTM900I Function: mhc_function last started on mhc_date at mhc_time.
new: ISTM900I Function: mhc_function last mhc_usage on mhc_date at mhc_time.