The context or the "label" of the event is a specification to narrow the scope of the event. When someone specifies 'job' they don't normally mean all jobs, so a context is required to determine which job they are describing. A context can be specified in 3 different forms:
- pre-defined label
- process group label
- job ID
self
This job
parent
The job referred to by pid
Table 5: Pre-defined labels