This command is a nonprinting directive.  The following
    types of SET commands are available:

        SET LOG filespec
        SET OUTPUT filespec
        SET PROCESS name
        SET RMS=optionspec

Additional information available:

PROCESS

LOG filespecOUTPUT filespecRMS = optionspec

    Sends a copy of all subsequent output to the file specified.
    In addition, all subsequent output continues to be sent to SYS$OUTPUT.
    This remains in effect until you issue a SET NOLOG command.

    Sends all subsequent output to the specified file.  None of the
    subsequent output is sent to SYS$OUTPUT.  This remains in effect
    until you issue another SET OUTPUT command.

        SET PROCESS [name] [/qualifier]

    Selects a process to be used as the current process.  Subsequent
    commands display information on this new current process.

Additional information available:

/INDEX/SYSTEM

    Specifies the new current process by the index into the system's list
    of software process control blocks(PCB).  Alternatively, this argument
    can be the process identification (EPID or PID) longword, from which
    SDA extracts the correct index.

    Specifies the new current process by the system process control block.
    The system PCB and process header (PHD) are dummy structures that are
    located in system space and contain the system working set, global
    section table, global page table, and other system-wide data.

    Allows specification of control blocks to be displayed by the
    SHOW PROCESS/RMS command.  The optionspec has the form

        option    or     (option1,option2,....optionn)

    where option may be

                ALL [:ifi]      Display all control blocks (default)
                [NO] ASB        Asynchronous Save Block
                [NO] BDB        Buffer Descriptor Block
                [NO] BDBSUM     BDB Summary Page
                [NO] BLB        Buffer Lock Block
                [NO] BLBSUM     BLB Summary Page
                [NO] CCB        Channel Control Block
                [NO] FCB        File Control Block
                [NO] FWA        File Work Area
                [NO] GBDSUM     GBD Summary Page
                [NO] GBH        Global Buffer Header
                [NO] IDX        Index Descriptor
                [NO] IFAB [:ifi] Internal Fab
                [NO] IFB [:ifi] Internal Fab
                [NO] IRAB       Internal Rab
                [NO] IRB        Internal Rab
                [NO] RLB        Record Lock Block
                [NO] TRC        Global Buffer Trace Information
                [NO] WCB        Window Control Block
                [NO] *          Current (as opposed to "new") option
                                specification (includes ifi value)

         ifi => expression      IFI value (internal file identifier)

             All (default)      Use of this parameter restricts the
                                display to the selected control blocks
                                for only the file specified by the IFI
                                value.