A_COMMAND(mailcom); void abort_mail(void); void write_mail (char *u); void input_mail (char *x); void read_mail (char *u); void dump_headers (FILE *m); void mail_menu (char *u); void read_msg (int num); void open_mail (char mode, Boolean complain); void close_mail (char mode); void delete_mail (void); void check_files (void);