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

    Lists the parameters with which the startup file executes.
    Parameters that are not specified receive the defaults 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, see the /PARAMETER qualifier under
    STARTUP MODIFY command for instructions.