I have a strategy that plots up/down arrows on the chart. I see these on every chart I pull up, and am wondering how the arrows get plotted post-current timeframe? Does a strategy get applied to the entire timeframe of a chart? The reason I'm asking is the strategy alerts with a "ding" when something is encountered. Does the "ding" happen only going forward? For every instance (even that happen in the past)? For every stock? For just the stock I'm currently viewing the chart of? For just those stocks in my watchlist? Thanks