If the operation is not permitted, then an error message is issued at block 36, and the request for {TAIL ~ rearrangement} or reallocation of {HEAD ~ memory} is aborted and terminates at block 35 
If the operation is not permitted , then an error message is issued at block 36 , and the request for { TAIL ~ rearrangement } or reallocation of { HEAD ~ memory } is aborted and terminates at block 35
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH