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Range
Range delivers the span/difference between the high and low in ticks for each bar. The range is always greater than or equal to 0.
Range()
Range(IDataSeries inSeries)
Range()[int barsAgo]
Range(IDataSeries inSeries)[int barsAgo]
double
When using this method with an index (e.g. Range()[int barsAgo] ), the range value for the referenced bar will be outputted.
inSeries Input data series for the indicator

Range
//Output for the value of the range
Print("The current bar has a range of: " + Range()[0]);
//Identical output
Print("The current bar has a range of: " + High[0] - Low[0]);