Library /sys$common/syshlp/tcpip$telnet_help.hlb ENABLE, AUTOSYNCH  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Enables the sending of the synchronization and interrupt
    characters in urgent mode.

    o  Enabled - The local host sends an interrupt character in
       urgent mode, and the remote host immediately processes it.

    o  Disabled - TELNET sends the interrupt character in sequence
       with the other characters in the stream, and the remote host
       processes this character in the sequence received.

    Default: DISABLE AUTOSYNCH.

    DCL-Style Format

      ENABLE AUTOSYNCH

    UNIX Style Format

      toggle autosynch