"Appearance: The advance has solid volume and the upward price action is strong, which forms the vertical look of a flagpole. The resting period and slight retracement is narrow price action with a slight downward tilt or is horizontal (but no upward movement) with volume contracting during the flag portion of the pattern. The flag portion of the pattern has highs and lows which can be connected by small trend lines which are parallel, giving the flag portion the look of a small channel."