VM/CMS CP STORE Command
STORE allows you to alter virtual storage and registers
Priviledge Class G
Control, general, and floating point registers can be modified as well as first level virtual storage. In
addition the PSW and virtual machine status can be saved to low virtual memory as if a hardware store status
had occured. The PSW may also be modified.
Reference the detailed IBM manaul page here.
It is used most commonly for program development and debuging.