The building blocks for the candlestick chart are the high, the low, the opening and the closing. The difference to the bar chart is that the open and the close form the cornerstones for the, so called, real body. The body is white if the closing is higher than the opening. The contrary is true for the black body. The candlestick charting technique is an ancient Japanese invention dating from the late 18th century. The theory tries to unveil trend reversal or continuation signals. Various tools of analysis (moving average, RSI, trend-lines etc.) can be applied in combination with the candlesticks.