I<noping only> B<-u> forces UTF-8 output, B<-U> disables UTF-8 output. If
neither is given, the codeset is automatically determined from the locale.
-=item B<-g> B<none>|B<prettyping>|B<boxplot>
+=item B<-g> B<none>|B<prettyping>|B<boxplot>|B<histogram>
I<noping only> Selects the graph to display.
=item B<none>
-Do not shot a graph.
+Do not show a graph.
=item B<prettyping>
=item B<boxplot>
-Shows a box plot where the x-axis, i.e. the width of the window, is the
+Show a I<box plot> where the x-axis, i.e. the width of the window, is the
round-trip time. The entire width of the window it the ping interval, set with
the B<-i> option.
median. The whiskers are sized to contain 95% of the replies -- 2.5% below the
whiskers and 2.5% above.
+ |----------[#####|##########]--------------------------------------------|
+ ^ ^ ^ ^ ^
+ 2.75% 25% 50% 75% 97.5%
+
+=item B<histogram>
+
+Show a I<histrogram> of the round-trip times. The width of the window is taken
+as round-trip time from 0ms on the left to the I<interval> (the B<-i> option,
+default 1000ms) on the right.
+
+The height of the graph is scaled so that the most-used buckets vertically fills
+the line. The buckets are colored green up to and including the median, yellow
+up to and including the 95th percentile and red for the remainder.
+
+In addition, the histogram is colored, if supported by the terminal. The green
+bars include the median (50% of responses), yellow bars include the 95th
+percentile and outliers are colored red.
+
=back
=item B<-P> I<percent>
" -f filename filename to read hosts from\n"
#if USE_NCURSES
" -u / -U force / disable UTF-8 output\n"
+ " -g graph graph type to draw\n"
#endif
" -P percent Report the n'th percentile of latency\n"
" -Z percent Exit with non-zero exit status if more than this percentage of\n"