Buy - MFI crosses back lower limit from oversold region
Sell - MFI crosses back upper limit from overbought region
Parameters available:
Period - period of MFI
Lower Limit - lower limit of MFI
Upper Limit - upper limit of MFI
x - the minimum amount that MFI rebounded/retreated from lower(buy)/upper(sell) limit
x Margin - if value sets to ‘3’ means MFI rebounded/retreated within x +/- 3
t - the maximum number of periods for the rebound/retreat to happen
Rule type - please refer to 140 for details
Data type - please refer to 141 for details