{HEAD ~ A heating or cooling element} is disposed within {TAIL ~ the housing proximate} the cavity to heat or cool the cavity 
is disposed within
{ HEAD ~ A heating or cooling element } is disposed within { TAIL ~ the housing proximate } the cavity to heat or cool the cavity
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH