VMS Help SET, TERMINAL, Qualifiers, /PASTHRU  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /PASTHRU
       /NOPASTHRU (default)

    Controls whether the terminal passes all data (including tabs,
    carriage returns, line feeds, and control characters) to an
    application program as binary data. The setting of /TTSYNC is
    allowed.

    Make sure that you spell both these qualifiers exactly as they
    appear in the text.