Library /sys$common/syshlp/sysmanhelp.hlb STARTUP, MODIFY, Qualifiers, /PARAMETER  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /PARAMETER=(P1:arg1,P2:arg2,...,P8:arg8)

    Changes the parameters that are to be passed to the file during
    startup. Parameters that are omitted receive the default
    parameters defined by the system parameter STARTUP_Pn. If
    STARTUP_Pn is blank, "FULL" is used as parameter 1 (P1) and is
    passed by STARTUP.COM to each startup component file. If you want
    a blank P1 parameter given to a specific component file, use the
    command:

    SYSMAN> STARTUP MODIFY FILE component.com/PARAM=P1:""