16.2 "Job" Numbers
When using IBM i, a job number is automatically assigned by the system when a user signs onto a workstation or submits a job. At a workstation, multiple processes and functions can be run in separate invocations from the same job all having the same job number.
When running Visual LANSA applications, a job number will be assigned for each invocation of the X_RUN function whether it is run from the same window or not.
This information is important if your functions rely upon job numbers or use the job number system variable.