/* (C) Universitaet Passau 1986-1991 */
extern	float	springembedder_max_force;
extern	float	springembedder_opt_distance;
extern	float	springembedder_period;
extern	int	springembedder_max_iterations;
extern	int	springembedder_animation_intervals;

extern	char	*nature_menu_callback_proc();
extern	void	nature();
extern	void	fast_nature();
