=item B<-4>
-Force the use of IPv4.
+Force the use of IPv4.
=item B<-6>
returned by L<geteuid(2)>) differ, the only argument allowed for this option is
"-" (i.e. standard input).
+=item B<-O> I<filename>
+
+Write measurements in I<Comma Separated Values> (CSV) format to I<filename>.
+This option writes three columns per row: wall clock time in (fractional)
+seconds since epoch, hostname and the round trip time in milliseconds.
+
=item B<-Q> I<qos>
Specify the I<Quality of Service> (QoS) for outgoing packets. This is a
liboping is written by Florian "octo" Forster E<lt>ff at octo.itE<gt>.
Its homepage can be found at L<http://noping.cc/>.
-Copyright (c) 2005-2011 by Florian "octo" Forster.
+Copyright (c) 2005-2016 by Florian "octo" Forster.