{HEAD ~ measurement type acquisition} means for acquiring {TAIL ~ the measurement type} which is selected by an operator in the selection window 
for acquiring
{ HEAD ~ measurement type acquisition } means for acquiring { TAIL ~ the measurement type } which is selected by an operator in the selection window
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH