<boolean id="atari" _label="Atari" arg-set="-atari"/>
<boolean id="apple2" _label="Apple II" arg-unset="-no-apple2"/>
<boolean id="nvidia" _label="Nvidia" arg-unset="-no-nvidia"/>
<boolean id="atari" _label="Atari" arg-set="-atari"/>
<boolean id="apple2" _label="Apple II" arg-unset="-no-apple2"/>
<boolean id="nvidia" _label="Nvidia" arg-unset="-no-nvidia"/>