An overshoot of a trendline, usually you can count 3 waves or pushes on a 5 min chart intraday on futures after you see an extreme move...turns out this was just a new leg down in a downtrend more often than exhaustion, utterly unreliable strategy, only useful for marketing to newbies who haven't had their pockets drained by the markey yet, as Db_Phoenix knows I'm sure. VWAP is volume-weighted average price, the standard deviations of VWAP can be useful on a stock like AAPL but futures moves too fast and chaotically based on orderbook predatory algos and the like.