IBM RS/6000 Enterprise Server M80 Installation Manual page 84

-r ResourceType
The default for the chcod command (with no flags) displays the current value of
CustomerInfo , a reserved field named MailAddr , the system's model name and serial
number, and the current values for any ResourceType .
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Specifies the ResourceType (proc for processors) to be enabled and monitored
on the system. The system must support Capacity Upgrade on Demand for
ResourceType . If -r is specified, then -n must also be specified.