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

       /NOTE=string

    Specifies a message of up to 255 characters to appear on the
    flag page of the print job. Enclose messages containing lowercase
    letters, blanks, or other nonalphanumeric characters (including
    spaces) in quotation marks (" ").