A formula contains one or several indicators and functions. A formula is used to plot time-series on a chart, create composites/market indicators, screens or backtest trading systems. A formula should be implemented using the QuantShare language. To update a chart formula: - Right click on a chart - Select "Edit Formula" to open the formula editor Example: a = rsi(14) - rsi(2); plot(a, "RSI", colorGreen); The above formula calculates then plots the difference between two relative strength index indicators with two different periods. To save a formula, select "File" then "Save Formula". To display a list of formulas: - Select "View" in the main menu then click on "Formulas" - The "Formulas" form displays all formulas that are stored under the selected folder - Double click on a formula to add it to a chart - Right click on a formula to open a menu  It is also possible to open a formula directly from the formula editor control: - Click on the "Folder+" icon/button (Next to Add Indicator/Method) - Select "Load Formula"  Note that the formula editor control is shared by many plug-ins including the charting, screening, composites and simulator plug-in.
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