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

    The STARTUP MODIFY command edits startup information associated
    with components in the startup database. For example, the command
    can rename a file or change the parameters that are passed
    to a file during startup. You can select a group of files for
    modification based on the phase in which they run.