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This part displays process information and process command (actions which can be executed on a process).
Performance
This part shows program wide performance information: The results of active and passive service / host check, check statistics and buffer usage.
Queue
This part lists hosts or/and services with check time and possible actions. You can also have here information about host/service state and which command can be executed on this host/service. By clicking on a host/service you can have host/service state information.
