Public Function Aroon(period As Integer) As String
The Aroon indicator is often used to determine whether a stock is trending or not and how stable the trend is.
Trends are determined by extreme values (above 80) of both lines (Aroon up and Aroon down), whereas unstable prices are determined when both lines are low (less than 20).
|Period as integer
Returns the handles of a technical indicator, in case of failure returns an empty string.