This indicator is intended to be used while using Replay Mode.
A vertical line will be drawn when you can safely check the 4H, Daily, or Weekly candle without seeing future price.
It is similar to the built-in Session Breaks, but has the benefit of not needing to remove one candle before checking the Daily.
When the line is the color of your 4H settings, it is safe to check the 4H candle.
When the line is the color of your Daily settings, it is safe to check the 4H and Daily candles.
When the line is the color of your Weekly settings, it is safe to check the 4H, Daily and Weekly candles