<command arg="-root"/>
+ <video href="https://www.youtube.com/watch?v=XEL8g3qbthE"/>
+
<hgroup>
<vgroup>
<number id="delay" type="slider" arg="-delay %"
<boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
</hgroup>
+ <xscreensaver-updater />
+
<_description>
-This draws a sonar screen that pings (get it?) the hosts on
-your local network, and plots their distance (response time) from you.
-The three rings represent ping times of approximately 2.5, 70 and 2,000
-milliseconds respectively.
+A sonar display pings (get it?) the hosts on your local network, and
+plots their distance (response time) from you. The three rings
+represent ping times of approximately 2.5, 70 and 2,000 milliseconds
+respectively.
Alternately, it can run a simulation that doesn't involve hosts.
-(If pinging doesn't work on Linux, you may need to make the executable
-be setuid.)
-
-http://en.wikipedia.org/wiki/Ping#History
+https://en.wikipedia.org/wiki/Ping#History
Written by Jamie Zawinski and Stephen Martin; 1998.
</_description>