{HEAD ~ The display controller} and display operate in {TAIL ~ concert} to display graphical images that are representative of numerical, tabular, data 
operate in
{ HEAD ~ The display controller } and display operate in { TAIL ~ concert } to display graphical images that are representative of numerical , tabular , data
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH