The data entry system 105 typically includes {HEAD ~ one or more data entry devices} 120, which include a user interface 122, and {TAIL ~ data entry controllers} 125, and data storage devices 127 
The data entry system 105 typically includes { HEAD ~ one or more data entry devices } 120 , which include a user interface 122 , and { TAIL ~ data entry controllers } 125 , and data storage devices 127
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH