dim ap, bandavg, middleavg as datarow
dim periods, type, factor as number
dim Lower, Upper as datarow
ap = ($HighBar + $LowBar + $CloseBar) / 3
middleavg = GD(ap, 1, type, periods)
bandavg = GD(($HighBar - $LowBar), 1, type, periods)
Lower = middleavg - bandavg*factor
Upper =...