{TAIL ~ The initial value} of {HEAD ~ 20 bpm} corresponding to a three second pause is of course given only as an example 
{ TAIL ~ The initial value } of { HEAD ~ 20 bpm } corresponding to a three second pause is of course given only as an example
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH