Buy - Williams %R crosses back lower limit from oversold region
Sell - Williams %R crosses back upper limit from overbought region
Parameters available:
Period - period of Williams %R
Lower Limit - lower limit of Williams %R
Upper Limit - upper limit of Williams %R
x - the minimum amount that Williams %R rebounded/retreated from lower(buy)/upper(sell) limit
x Margin - if value is set to 3 means Williams %R 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