FRE_SCRUB
.modes = {FRE_SCRUB, FRE_DEMAND, LRE_SCRUB, LRE_DEMAND},
first = (mode == FRE_SCRUB || mode == FRE_DEMAND);
scrub = (mode == FRE_SCRUB || mode == LRE_SCRUB);
scrub = (rrl->modes[i] == FRE_SCRUB || rrl->modes[i] == LRE_SCRUB);