<number id="count" type="spinbutton" arg="-count %"
_label="Number of Circles" low="0" high="20" default="0"/>
- <number id="speed" type="slider" arg="-delay %"
+ <number id="delay" type="slider" arg="-delay %"
_label="Speed" _low-label="Slow" _high-label="Fast"
low="0" high="120000" default="100000"
convert="invert"/>