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Here is one
SuperTrend (experiment) - metatrader 5 version
Mladen : This version has 4 types of calculation
~ Average true range mode (default)
~ standard error mode
~ standard deviation with out sample correction mode
~ standard deviation with sample correction mode
Built in standard deviation is left out in this version (it is the same as standard deviation with out sample correction mode) . some other changes made too - it is obvious that it is showing a sort of a channel that super trend is using - as recommended,the "trend" line can be used as stop loss value apart from being an entry and exit signal - the channel is showing a sort of expected volatility in which the price is expected to evaluate.
The usual set of alerts is already built in into this version
Sample examples comparison- in one it using ATR when in other it using standard error