The Spider ZIGZAG is an algorithm to determine how critical the current peak is by spreading several lines with different parameters instead of one line between each 2 peaks. 1. The more zigzag's lines meet at a peak the higher probability the market will go for correction or change direction. 2. Usually when 3-4 zigzag's lines meet at a peak, the market enters a correction period, this don't happen instantly, it might take some time. 3. Usually when 5-6 zigzag's