Each time you plot a time-series, the chart scale is updated automatically so that each time-series fit within the chart. If you plot a line at 80 and the displayed stock prices vary between 25 and 35, you will end up with a chart that has a 25-80 scale range.  One way to fix this is by instructing QuantShare to ignore a specific time-series in the scale calculation. This can be done by adding a specific style in the "Plot" function last parameter. The previous chart was displayed using the following formula: PlotCandleStick("Quotes", colorBrown|255|colorViolet|255|0, StyleOwnScale); Plot(80, "Line-80", colorBlack, chartLine, StyleSymbolNone); By using the "StyleNoScale" setting, we instruct QuantShare to ignore the "Line-80" time-series in the scale calculation. The new formula is: PlotCandleStick("Quotes", colorBrown|255|colorViolet|255|0, StyleOwnScale); Plot(80, "Line-80", colorBlack, chartLine, StyleSymbolNone|StyleNoScale); The "|" operator means that we want to apply both "StyleSymbolNone" and "StyleNoScale" styles.  Line-80 is now hidden and it is displayed only when another non-hidden time-series (such as stock prices) reaches the level 80.
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