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ABCs of z/OS System Programming Volume 13 by Juha Vainikainen, Paul Rogers

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JES3 and multisystem consoles
Consoles are devices that you use to enter commands and receive messages from JES3, MVS and application programs. Consoles have certain capabilities and limitations, depending on how you define them. Consoles in a JES3 environment fall into one of the following classes:
Multiple console support (MCS) consoles
MCS consoles are devices that you can physically attach to global or local processors. These consoles allow you to control the sysplex. Refer to z/OS MVS Planning: Operations, SA22-7601 for information about ...

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