{HEAD ~ Other operations} include reading a directory, creating a file, removing a file, retrieving file attributes, modifying {TAIL ~ file attributes}, and locking a file 
{ HEAD ~ Other operations } include reading a directory , creating a file , removing a file , retrieving file attributes , modifying { TAIL ~ file attributes } , and locking a file
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH