<boolean id="windows" _label="Windows 3.1" arg-unset="-no-windows"/>
<boolean id="nt" _label="Windows NT" arg-unset="-no-nt"/>
<boolean id="2k" _label="Windows 2000 " arg-unset="-no-2k"/>
<boolean id="windows" _label="Windows 3.1" arg-unset="-no-windows"/>
<boolean id="nt" _label="Windows NT" arg-unset="-no-nt"/>
<boolean id="2k" _label="Windows 2000 " arg-unset="-no-2k"/>