text: #ifndef OGL_PHYSICSSYSTEM_INCLUDED
  #define OGL_PHYSICSSYSTEM_INCLUDED
  
  #include "GLSim/core/System.h"
  
  #include "GLSim/core/Object.h"
  
  namespace ogl { class PhysicsSystem; }
  class PhysicsSystem : public System
  {
  public:
  	PhysicsSystem();
  	~PhysicsSystem();
  
  	void update();
  private:
  };
  
  #endif