<number id="limit" type="slider" arg="-limit %"
_label="Density" _low-label="Low" _high-label="High"
low="3" high="300000" default="200000"/>
<_description>
<number id="limit" type="slider" arg="-limit %"
_label="Density" _low-label="Low" _high-label="High"
low="3" high="300000" default="200000"/>
<_description>