<boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
+ <xscreensaver-updater />
+
<_description>
+A pre-heliocentric model of planetary motion.
+
This draws the path traced out by a point on the edge of a
circle. That circle rotates around a point on the rim of another
-circle, and so on, several times. These were the basis for the
-pre-heliocentric model of planetary motion.
+circle, and so on, several times.
http://en.wikipedia.org/wiki/Deferent_and_epicycle