extern int ch,maxy;
extern char song_directory[1024];
extern char sample_directory[1024];
extern char song_filename[256];
extern char sam_filename[256];
extern unsigned char song_fpos_real;
extern unsigned char song_fpos_hl;
extern unsigned char song_fpos_hl_old;
extern unsigned char sam_fpos_real;
extern unsigned char sam_fpos_hl;
extern unsigned char sam_fpos_hl_old;
extern char edit_mode;
extern char nibble_display[];
extern char *note_display[];

extern void set_colour_hl(int colour);
extern void set_colour(int colour);
extern void display_topbar(void);
extern void hl_bar(int option,int x);
extern void update_screen(void);
extern void byte2str(char *str,unsigned char value);
extern void word2str(char *str,unsigned long value);
extern void dword2str(char *str,unsigned long value);
extern int find_hexn(char chh);
extern int hex2nibn(char *str);
extern int hex2charn(char *str);
extern long hex2longn(char *str);
extern void get_string(int y, int x,char *str,int maxlen);
extern void clear_area(int y1,int x1,int y2,int x2);
extern void ferr_message(char *mess_str);
extern void main_editor_dis_bg(void);
extern void save_song(int song_type);
extern int quit_confirm(void);
extern void global_keys(void);