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

    Sends all messages that have been queued for printing with the
    PRINT command during this session to the printer. Allows the job
    to print without exiting mail. This qualifier is synonymous with
    the /PRINT qualifier.