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