{HEAD ~ The gripper} and carriage is then driven towards {TAIL ~ the trailing end} of the loaf being sliced until said gripper engages said end 
is driven towards
{ HEAD ~ The gripper } and carriage is then driven towards { TAIL ~ the trailing end } of the loaf being sliced until said gripper engages said end
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH