Bar's Body Extreme with Alert

Bar's Body Extreme with Alert measure volatility of bar's body and caculate extreme level in specified periods or custom level with alert. Detail options below:

1. Default Extreme Level
* Default level is the +/- highest volatility of bar's body in 100 periods
* Periods of bar to calculate default extreme adjustable

2. Custom Extreme
* Default Extreme Top auto disable if Custom Extreme Top >0
* Default Extreme Bottom auto disable if Custom Extreme Bottom <0

3. Alert
* Extreme alert: body's volatility > Extreme top level or body's volatility < Extreme bottom level
* Extreme Top Alert: body's volatility > Extreme top level
* Extreme Bottom Alert: body's volatility < Extreme bottom level