Retracement / pullbackA leg against the trend inside it.In the chapterIXFibonacciWith every defensible anchor, 81 % of candles are within reachFrom the same chapterExtensionA projection beyond the impulse. It needs three anchors instead of two.AnchorThe two extremes a retracement is measured between. With every defensible anchor at once, 81 % of candles close within reach of some level.