a differentiating register to store values that differentiate entries in a section of a memory, wherein {HEAD ~ each value} comprises {TAIL ~ a bit position}, a reference value, and a pointer 
comprises
a differentiating register to store values that differentiate entries in a section of a memory , wherein { HEAD ~ each value } comprises { TAIL ~ a bit position } , a reference value , and a pointer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH