- <boolean id="grab" _label="Grab Screen Image" arg-set="-water"/>
-
- <boolean id="stir" _label="Moving Splashes" arg-set="-stir"/>
-
- <boolean id="oily" _label="Psychedelic Colors" arg-set="-oily"/>
-
- <boolean id="gray" _label="Grayscale" arg-set="-grayscale"/>
+ <hgroup>
+ <vgroup>
+ <boolean id="grab" _label="Grab Screen Image" arg-set="-water"/>
+ <boolean id="stir" _label="Moving Splashes" arg-set="-stir"/>
+ </vgroup>
+ <vgroup>
+ <boolean id="oily" _label="Psychedelic Colors" arg-set="-oily"/>
+ <boolean id="gray" _label="Grayscale" arg-set="-grayscale"/>
+ </vgroup>
+ </hgroup>