code: public int getNrEQR(){
  
  		if (myResultsEQR < 0){
  			if ( optLen == null) {
  				myResultsEQR = 0;
  				return 0;
  			}
  
  			int nrEqr = 0;
  			for(int bk = 0; bk < blockNum; bk ++)       {
  
  				for ( int i=0;i< optLen[bk];i++){
  					nrEqr++;
  				}
  			}
  			myResultsEQR = nrEqr;
  		}
  		return myResultsEQR;
  	}
docs: Get the number of structurally equivalent residues
  
  @return nr of EQR