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

    Indicates the step of the booting process at which you want the
    image loaded. Valid load steps are INIT (which causes the system
    initialization code to load the image), and SYSINIT (which causes
    the SYSINIT process to load the image).

    If you do not specify a value for the /LOAD_STEP qualifier, it
    defaults to SYSINIT.