/* Can_do.c */
int can_do_float(void);
/* Color.c */
int color(int);
/* Draw_line.c */
int draw_line(int, int, int, int);
/* Draw_point.c */
int draw_point(int, int);
/* line_attr.c */
int line_width(int);
/* Get_w_box.c */
int Get_location_with_box(int, int, int *, int *, int *);
/* Get_w_line.c */
int Get_location_with_line(int, int, int *, int *, int *);
/* Get_w_pnt.c */
int Get_location_with_pointer(int *, int *, int *);
/* Graph_Clse.c */
int Graph_Close(void);
/* Graph_Set.c */
int Graph_Set(void);
/* Panel.c */
int Panel_save(char *, int, int, int, int);
int Panel_restore(char *);
int Panel_delete(char *);
/* Polygn_abs.c */
int Polygon_abs(int *, int *, int);
/* Reset_clr.c */
int reset_color(int, int, int, int);
/* Returns.c */
int Screen_left(int *);
int Screen_rite(int *);
int Screen_bot(int *);
int Screen_top(int *);
int Get_num_colors(int *);
/* Text.c */
int Text(char *);
/* connect.c */
int get_connection(char *, int *, int *);
int prepare_connection(void);
int check_connection(char *, char *);