#include <argp.h>
+// Gameplay Variations
+extern float opt_bounciness;
+extern float opt_gamespeed;
+extern float opt_max_lead;
+
+// Look and Feel
extern int opt_fullscreen;
extern int opt_music;
extern int opt_sound;
-extern float opt_bounciness;
-extern float opt_gamespeed;
-extern int opt_tail_engine;
-extern int opt_friction;
struct argp argp;