int entmsg(int is_reply, int c);
void readmsgs(int c, int rdir, int q);
void edit_system_message(char *which_message);
-extern int lines_printed;
pid_t ka_wait(int *kstatus);
void list_urls(void);
void check_message_base(void);
int format_type,
int mode);
void citedit(FILE *);
+int file_checksum(char *filename);