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Interface configuration
The “Show BID\ASK lines” button shows or hides the current buyer and seller price lines, which are formed by limit orders in the order book of buyers BID (green line) and sellers ASK (red line). The distance between these two lines is called the price spread. These lines can be used to determine the divergence of supply and demand, but it overloads the chart and usually these lines are turned off in day-to-day trading to better see the crosses of trades.