newVector.addElement(new Option("\tNr of instances\n", "I", 1, "-I <integer>"));
newVector.addElement(new Option("\tNr of instances\n", "M", 1, "-M <integer>"));
	public Enumeration listOptions() {		Vector newVector = new Vector(6);		newVector.addElement(new Option("\tGenerate network (instead of instances)\n", "B", 0, "-B"));		newVector.addElement(new Option("\tNr of nodes\n", "N", 1, "-N <integer>"));		newVector.addElement(new Option("\tNr of arcs\n", "A", 1, "-A <integer>"));		newVector.addElement(new Option("\tNr of instances\n", "I", 1, "-I <integer>"));		newVector.addElement(new Option("\tCardinality of the variables\n", "C", 1, "-C <integer>"));		newVector.addElement(new Option("\tSeed for random number generator\n", "S", 1, "-S <integer>"));		return newVector.elements();	} // listOptions