If the bit is set, the corresponding timeseries is used, if it is not set, the timeseries is not used.
The bit-timeseries correspondence:
bit 0 - Open timeseries, bit 1 - High timeseries, bit 2 - Low timeseries, bit 3 - Close timeseries, bit 4 - Spread timeseries, bit 5 - Time timeseries, bit 6 - TickVolume timeseries, bit 7 - RealVolume timeseries.