code: public String explainScore(StringWrapper s,StringWrapper t) 
  	{
  		if (scaling) {
  			int minLen = Math.min( s.unwrap().length(), t.unwrap().length() );
  			double scaledDist =  super.score(s,t) / (minLen * CHAR_EXACT_MATCH_SCORE);
  			return super.explainScore(s,t)
  				+ "\nScaling factor: "+(minLen*CHAR_EXACT_MATCH_SCORE) 
  				+ "\nScaled score: "+scaledDist;
  		} else {
  			return super.explainScore(s,t);
  		}
  	}
docs: Version where distance which is possibly scaled to [0,1].