Oftentimes, intraday trendlines that are started at specific times, e.g. 8:00am or market open 9:30am, are well respected throughout the trading day.
This indicator draws up tp 3 intraday trendlines that are anchored at user defined times, respectively at the corresponding candle's high and low points.
From there, the line*s xy2 are connected in a way that all following candles are enclosed.