for (int i = 0; i < vl.length; ++i) {
for (ValueNumber aVl : vl) {
	private static String vlts(ValueNumber[] vl) {		StringBuffer buf = new StringBuffer();		for (int i = 0; i < vl.length; ++i) {			if (buf.length() > 0) buf.append(',');			buf.append(vl[i].getNumber());		}		return buf.toString();	}