Library /sys$common/syshlp/lse$clihelp.hlb DEFINE, LANGUAGE, Qualifiers, /HELP_LIBRARY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /HELP_LIBRARY=file-spec
       /NOHELP_LIBRARY (D)

    Specifies the HELP library where you can find help text for
    placeholders and tokens defined in this language. LSE applies
    the default file specification SYS$HELP:HELPLIB.HLB. If you want
    to access some HELP library other than SYS$HELP, you must supply
    an explicit device name.