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