/* main.c */
int scs_open_new(struct Map_info *, char *, char *);
/* proj.c */
int do_INV(double *, double *);
int do_FOR(double *, double *);
int scs_open_new(struct Map_info *, char *, char *);
int set_proj(char *, int);
/* setenv.c */
int select_current_env(void);
int select_target_env(void);