nmax (';' LIST )*

static String	_nmax	= "${nmax;<list>[;<list>...]}";

public String _nmax(String args[]) throws Exception {
	verifyCommand(args, _nmax, null, 2, Integer.MAX_VALUE);

	List<String> list = toList(args, 1, args.length);
	double d = Double.NaN;

	for (String s : list) {
		double v = Double.parseDouble(s);
		if (Double.isNaN(d) || v > d)
			d = v;
	}
	return toString(d);
}