FEAT_CLEAR_PEAKS
#define has_clear_peaks(d) ((d)->features & FEAT_CLEAR_PEAKS)
data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
data->features |= FEAT_CLEAR_PEAKS;