The user interface 136 may include {HEAD ~ a display component}, such as {TAIL ~ a digital or analog display device} designed to provide operational feedback to a user 
such as
The user interface 136 may include { HEAD ~ a display component } , such as { TAIL ~ a digital or analog display device } designed to provide operational feedback to a user
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH