public EnrichedRegion(SmoothingWindow window) {
   start = window.getStart();
   stop = window.getStop();
 }
 // methods
 public String getBed5(int scoreIndex) {
   float score = bestWindow.getScores()[scoreIndex];
   return chromosome + "\t" + start + "\t" + stop + "\t.\t" + score + "\t.";
 }
 // constructors
 public EnrichedRegion(SmoothingWindow window, String chromosome) {
   chromosome = this.chromosome = chromosome;
   start = window.getStart();
   stop = window.getStop();
   bestWindow = window;
 }