This is a trend indicator
Atr and 3 moving averages are used
Short 9-day moving average,Medium 15-day moving average,Calculated with a long 24-day moving average.
Atr period : 5
Sht,Mid, Lng calculation method is different
long = crossover(Sht,Mid) and close > Sht
short = crossunder(Sht, Lng ) or close < Lng
Buy should be done when the barcolor turns green
Sell should be done when barcolor is red
When the barcolor is black, there may be change.
i don't know sorry