The OptionalSort operation given in Example VI decides whether to sort elements in a dataset based on {HEAD ~ the value} of {TAIL ~ the “performSort” flag} 
of
The OptionalSort operation given in Example VI decides whether to sort elements in a dataset based on { HEAD ~ the value } of { TAIL ~ the “ performSort ” flag }
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 TAIL TAIL