/sys$common/syshlp/helplib.hlb MMS, Qualifiers, /INTERFACE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    /INTERFACE[=DECWINDOWS]
    /INTERFACE[=CHARACTER_CELL] (D)

    Controls whether MMS invokes the DECwindows Motif user interface
    or the character-cell interface. The CHARACTER_CELL qualifier is
    the default.