Retrieving the target file is made impractical by {HEAD ~ the deletion} of {TAIL ~ the reference} to the target file in the directory manager file 
of
Retrieving the target file is made impractical by { HEAD ~ the deletion } of { TAIL ~ the reference } to the target file in the directory manager file
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH