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System Level Procedure Environments

The term system level procedure applies to those specific NCL procedures that have access to specialized flows of information in a product region. In this region, there are several system level procedures, the principal ones being LOGPROC and PPOPROC. LOGPROC has access to and control over the flow of messages to the activity log. PPOPROC receives unsolicited messages from VTAM about events within the network.

The significant aspect of the special procedures is that there is only one of each in the system, and they have particular privileges and responsibilities that do not apply to the usual NCL procedures executed by product users.