In addition, dedicated function buttons 10 may be used for {HEAD ~ other interactions} requiring {TAIL ~ numeric input}, such as inputting security codes, credit card numbers, etc 
requiring
In addition , dedicated function buttons 10 may be used for { HEAD ~ other interactions } requiring { TAIL ~ numeric input } , such as inputting security codes , credit card numbers , etc
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH