By interacting with the various views, an analyst can quickly and cost efficiently determine {HEAD ~ which portions} of the application or portfolio need {TAIL ~ revision}, and the optimal methods for implementing the revisions 
need
By interacting with the various views , an analyst can quickly and cost efficiently determine { HEAD ~ which portions } of the application or portfolio need { TAIL ~ revision } , and the optimal methods for implementing the revisions
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 REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH