"DESCRIPTION 1"="To speed up keyboard buffered operations (decrease character download time) at high speed modem transfers (above 9600 bps), using communications/internet applications. Affects the time (in milliseconds) the Operating System processes a COM port interrupt. Default value is 2. If you notice any loss of keyboard characters while using internet/communications apps, increase it to 4 or higher. Experimenting may be necessary to determine your optimal setting."