Buy - RSI is trending upward
Sell - RSI is trending downward
Parameters available:
Period - period of RSI
t - the number of periods that RSI has been trending
Slope - the minimum slope of the moving average of RSI when it is trending
MA period - the number of periods used for the period of the moving average of RSI
Rule type - please refer to 140 for details
Data type - please refer to 141 for details