max (';' LIST )*

static String	_max	= "${max;<list>[;<list>...]}";

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

	List<String> list = toList(args, 1, args.length);
	String a = null;

	for (String s : list) {
		if (a == null || a.compareTo(s) < 0)
			a = s;
	}
	if (a == null)
		return "";

	return a;
}