pidadr

    OpenVMS usage:process_id
    type:         longword (unsigned)
    access:       modify
    mechanism:    by reference
    Process identification (PID) of the process. The pidadr argument
    is the address of the PID. The pidadr argument can only refer to
    a process running on the local node. You cannot modify a process
    on a remote node.

    You must specify the pidadr argument to modify a process whose
    UIC group number is different from that of the calling process.

 prcnam

    OpenVMS usage:process_name
    type:         character-coded text string
    access:       read only
    mechanism:    by descriptor-fixed-length string descriptor
    Process name of the process. The prcnam argument is the address
    of a character string descriptor pointing to the process name.
    You identify a process with a 1- to 15-character string.

    You can only use the prcnam argument to modify a process in the
    same UIC group as the calling process. To modify a process in
    another UIC group, you must specify the pidadr argument.

 shlvflg

    OpenVMS usage:longword_unsigned
    type:         longword (unsigned)
    access:       read only
    mechanism:    by value
    Value specifying whether automatic unshelving is to be turned on
    or off. The shlvflg argument is a longword containing this value.
    The value 0 turns automatic unshelving on. The value 1 turns
    automatic unshelving off.