These aspects of {HEAD ~ the invention} make it possible to change implementation at {TAIL ~ deployment time}, as opposed to compile time 
These aspects of { HEAD ~ the invention } make it possible to change implementation at { TAIL ~ deployment time } , as opposed to compile time
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH