char *data;
} HIST_ENTRY;
-extern char * readline PARAMS ((char *prompt));
-extern void using_history PARAMS ((void));
-extern void add_history PARAMS ((char *string));
-extern HIST_ENTRY *remove_history PARAMS ((int which));
+extern char * readline (char *prompt);
+extern void using_history (void);
+extern void add_history (char *string);
+extern HIST_ENTRY *remove_history (int which);