public String toString() {
		StringBuilder str = new StringBuilder("");
		str.append("*** Partitions ***\n\n");
		for (Partition p : lop) {
			str.append(p.toString());
			str.append("\n");
		}
		str.append("*** Models ***\n\n");
		for (CartsModel cm : locm) {
			str.append(cm.toString());
			str.append("\n");
		}
		return str.toString();
	}