<number id="speed" type="slider" arg="-speed %"
_label="Duration" _low-label="Short" _high-label="Long"
low="0" high="1000" default="0" />
<number id="speed" type="slider" arg="-speed %"
_label="Duration" _low-label="Short" _high-label="Long"
low="0" high="1000" default="0" />