- <boolean id="flash" _label="Light Flash" arg-unset="-no-flash"/>
- <boolean id="glow" _label="Self Glowing Smoke!" arg-unset="-no-glow"/>
- <boolean id="shoot" _label="Shoot the Shells Up" arg-set="-shoot"/>
+ <boolean id="flash" _label="Light flash" arg-unset="-no-flash"/>
+ <boolean id="glow" _label="Glowing smoke" arg-unset="-no-glow"/>
+ <boolean id="shoot" _label="Shells upward" arg-set="-shoot"/>
+
+ <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>