Library /sys$common/syshlp/helplib.hlb  —  SET  TERMINAL  Qualifiers  /READSYNC
       /READSYNC
       /NOREADSYNC (default)

    Controls whether the terminal uses the Ctrl/S and Ctrl/Q
    functions to synchronize data transmitted from the terminal.

                                 CAUTION

       SET TERMINAL/READSYNC should not be used on LAT terminal
       lines. Setting this characteristic may cause unexpected
       results.

    The default is the /NOREADSYNC qualifier; the system does not
    use the Ctrl/S and Ctrl/Q functions to control reads to the
    terminal. The /READSYNC qualifier is useful for certain classes
    of terminals that demand synchronization or for special-purpose
    terminal lines where data synchronization is appropriate.
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