code: public Point getPanelPos(int aligSeq, int i) {
  		Point p = new Point();
  
  		// get line
  		// we do integer division since we ignore remainders
  		int lineNr = i / DEFAULT_LINE_LENGTH;
  
  		// but we want to have the reminder for the line position.
  		int linePos = i % DEFAULT_LINE_LENGTH;
  
  		int x = linePos * DEFAULT_CHAR_SIZE + DEFAULT_X_SPACE + DEFAULT_LEGEND_SIZE;
  
  		int y = lineNr * DEFAULT_Y_STEP + DEFAULT_Y_SPACE;
  
  
  		y += DEFAULT_LINE_SEPARATION * aligSeq;
  
  		p.setLocation(x, y);
  		return p;
  	}
docs: get the position of the sequence position on the Panel
  
  @param aligSeq  0 or 1 for which of the two sequences to ask for.
  @param i sequence position
  @return the point on a panel for a sequence position