The main purpose of a Heikin-Ashi chart is to show the general trend of the price (direction of price) and the strength of each trend;[7] these are represented by the wicks: small lines that extend from the main body of the candle.[8] A series of candles rising with no lower wick signifies a strong uptrend, and vice versa with candles falling with no upper wick.[9] A doji signifies a possible change in the price trend.