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## Top 2 Bottom 2 package overview

The Top 2 Bottom 2 (T2B2) strategy utilises [the gct-ta MFI package](https://github.com/thrasher-corp/gct-ta) to analyse market signals and selects the top and bottom two currencies based on MFI value.
It is a basic example strategy to highlight how the backtester can perform more complex data event signal processing

This strategy *requires* at least 4 exchange currency settings to determine the 4 signals to process
This strategy *requires* `SimultaneousSignalProcessing` aka [use-simultaneous-signal-processing](/backtester/config/README.md).
This strategy does support strategy customisation in the following ways:

| Field | Description |  Example |
| --- | ------- | --- |
|mfi-high| The upper bounds of MFI that when met, will trigger a Sell signal | 70 |
|mfi-low| The lower bounds of MFI that when met, will trigger a Buy signal | 30 |
|mfi-period| The consecutive candle periods used in order to generate a value. All values less than this number cannot output a buy or sell signal | 14 |

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