Values for monitoring job variables

A monitoring job variable consists of a system section (bytes 1-128) and a user section (bytes 129-256).
While a job or a program is executing, specific values are set at certain times in the system section of a monitoring job variable
The fields supplied with values (system section) by the MONJV handler and the system components are protected against every other write access from the beginning of the job until the end of the job.