<boolean id="xsymmetry" _label="With X Symmetry" arg-unset="-no-xsymmetry"/>
<boolean id="ysymmetry" _label="With Y Symmetry" arg-set="-ysymmetry"/>
- <number id="speed" type="slider" arg="-delay %"
+ <number id="delay" type="slider" arg="-delay %"
_label="Duration" _low-label="1 Second" _high-label="1 Minute"
low="1" high="60" default="5"/>