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