In {HEAD ~ the next step}, {TAIL ~ the coin cell} 24 must be inserted into the manual pliers, whereupon the microcontroller system 23 starts operating 
In { HEAD ~ the next step } , { TAIL ~ the coin cell } 24 must be inserted into the manual pliers , whereupon the microcontroller system 23 starts operating
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH