B_OPEN_LATCH
case B_OPEN_LATCH:
pos = row->fIsExpanded ? B_OPEN_LATCH : B_CLOSED_LATCH;
row->fIsExpanded ? B_OPEN_LATCH
pos = row->fIsExpanded ? B_OPEN_LATCH
fTargetRow->fIsExpanded ? B_OPEN_LATCH
fTargetRow->fIsExpanded ? B_OPEN_LATCH : B_CLOSED_LATCH,