VM/CMS CP LOADBUF Command
Load a UCS print chain image to a real printer
Priviledge Class D
Privledge Class D:
The printer must be drained before the command is issued. This should
be used when the printer is returned to the system after being attached to a particular user. Other reasons include the printer
or control unit was powered off then on, large number of parity errors, the character set is to be changed.
Reference the detailed IBM manaul page here.