extern void ComputeCoorMapping(void);
extern void ComputeCoorGlobe(void);
extern int z_sort(short *,short *);
extern void ComputeGlobeProj(void);
extern void DrawHoloMap(short ,short ,short );
extern void DrawListPos(short ,short ,short ,short );
extern long SearchNextArrow(long );
extern long SearchPrevArrow(long );
extern void SetHoloPos(unsigned char );
extern void ClrHoloPos(unsigned char );
extern void DrawTitle(short ,short ,short );
extern void DrawCurseur(void);
extern void InitHoloDatas(void);
extern void HoloMap(void);
extern void DrawHoloObj(unsigned char *,short ,short ,short );
extern short *GiveTrajPtr(long );
extern void HoloTraj(short );