Buy - MA is trending upward
Sell - MA is trending downward
Parameters available:
Period - the period of the moving average
Exponential - Select ‘yes’ to use exponential moving average otherwise use simple moving average
t - the number of periods that moving average has been trending
Slope - the minimum slope of the moving average when it is trending
Rule type - please refer to 140 for details
Data type - please refer to 141 for details