Up to {TAIL ~ this point}, this sequence is essentially describes {HEAD ~ Bluetooth} 1.0 operations  
Up to { TAIL ~ this point } , this sequence is essentially describes { HEAD ~ Bluetooth } 1.0 operations
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH