+ _label="Frame rate" _low-label="Low" _high-label="High"
+ low="0" high="100000" default="20000"
+ convert="invert"/>
+
+ <number id="functions" type="slider" arg="-functions %"
+ _label="Number of functions" _low-label="2" _high-label="6"
+ low="2" high="6" default="3"/>
+
+ <number id="detail" type="slider" arg="-detail %"
+ _label="Detail" _low-label="Low" _high-label="High"
+ low="4" high="14" default="9"/>
+
+<!--
+ On a 2.93 gHz iMac i7, I get these rates with -delay 0:
+
+ detail 3: invisible
+ detail 4: barely visible
+ detail 5: 1000+ fps, looks like noise at -delay 0, ok at -delay 20000
+ detail 8: ~700+ fps
+ detail 9: ~400 fps
+ detail 10: ~300 fps
+ detail 11: ~100 fps
+ detail 12: ~50 fps
+ detail 13: ~17 fps
+ detail 14: ~8 fps
+ detail 15: ~2 fps
+
+ With the default -delay, CPU load only starts causing the frame rate
+ to drop below 30 fps detail 12 or higher.
+-->