Library /sys$common/syshlp/mailhelp.hlb PRINT, Qualifiers, /TRAILER  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /TRAILER=keyword
       /NOTRAILER

    Controls whether a trailer page is printed at the end of the
    message. The /TRAILER qualifier can take either of two keywords:
    ALL or ONE. The ALL keyword indicates that each file in the job
    is followed by a trailer page. The ONE keyword indicates that a
    trailer page follows only the last copy of the last file in the
    job.