/LIBRARY=filename
       /NOLIBRARY

    Specifies the file name for the device control library. When you
    initialize an output execution queue, you can use the /LIBRARY
    qualifier to specify an alternate device control library. The
    default library is SYS$LIBRARY:SYSDEVCTL.TLB. You can use only a
    file name as the parameter of the /LIBRARY qualifier. The system
    always assumes that the file is located in SYS$LIBRARY and that
    the file type is .TLB.