This variable controls how the Terminal Manager should buffer its output on UNIX systems. Normally, all queued output is sent to the screen after each DISPLAY statement. If this value is set to 1 (on, true, yes), then output is sent only when the internal buffer is full, an ACCEPT statement is executed, or an internal 1-second timer expires. This can speed up output on some systems by reducing the number of times the operating system is called. It will also cause a short delay before messages are seen. We recommend keeping this setting at the default 0 (off, false, no) unless you are experiencing poor screen performance.