These metrics and statistics are then used to alter the appearance of various views of the software application, systems, subsystems, programs {HEAD ~ individual lines} of the programs generated by various visualization tools of {TAIL ~ the software visualization technique} 
These metrics and statistics are then used to alter the appearance of various views of the software application , systems , subsystems , programs { HEAD ~ individual lines } of the programs generated by various visualization tools of { TAIL ~ the software visualization technique }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL