printed in yellow. RTTs above that are considered to be "unusual" and are
printed in red.
+=head1 INTERACTIVE KEYBOARD CONTROLS
+
+When running I<noping>, the type of graph being displayed can be
+changed by using the B<g> key. A new host can be added at any time
+with the B<a> key.
+
=head1 SEE ALSO
L<ping(8)>, L<http://fping.org/>, L<liboping(3)>