In {TAIL ~ other embodiments}, the categorization can be made on the size of {HEAD ~ the file} or the data involved in the file request 
In { TAIL ~ other embodiments } , the categorization can be made on the size of { HEAD ~ the file } or the data involved in the file request
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH