-enum speaktype {touch, look, hear, study, change};
-
-/* b is not needed for POSIX but harmless */
-#define READ_MODE "rb"
-#define WRITE_MODE "wb"
-extern char* xstrdup(const char* s);
-extern void* xmalloc(size_t size);
-extern void packed_to_token(long, char token[]);
-extern long token_to_packed(const char token[6]);
-extern void tokenize(char*, long tokens[4]);
-extern void vspeak(const char*, va_list);
-extern bool wordeq(token_t, token_t);
-extern bool wordempty(token_t);
-extern void wordclear(token_t *);
-extern void speak(const char*, ...);
-extern void pspeak(vocab_t, enum speaktype, int, ...);
-extern void rspeak(vocab_t, ...);
-extern bool GETIN(FILE *, token_t*, token_t*, token_t*, token_t*);
-extern void echo_input(FILE*, char*, char*);
-extern int word_count(char*);
-extern char* get_input(void);
-extern bool silent_yes(void);
-extern bool yes(const char*, const char*, const char*);
-extern long GETTXT(bool, bool, bool);
-extern token_t MAKEWD(long);
-extern long vocab(long, long);
-extern int get_motion_vocab_id(const char*);
-extern int get_object_vocab_id(const char*);
-extern int get_action_vocab_id(const char*);
-extern int get_special_vocab_id(const char*);
-extern long get_vocab_id(const char*);
-extern void juggle(long);
-extern void move(long, long);
-extern long put(long, long, long);
-extern void carry(long, long);
-extern void drop(long, long);
-extern long atdwrf(long);
-extern long setbit(long);
-extern bool tstbit(long, int);
-extern long rndvoc(long, long);
-extern void make_zzword(char*);
-extern bool MAPLIN(FILE *);
-extern void datime(long*, long*);
-
-enum termination {endgame, quitgame, scoregame};
-
-extern void set_seed(long);
-extern unsigned long get_next_lcg_value(void);
-extern long randrange(long);
-extern long score(enum termination);
-extern void terminate(enum termination) __attribute__((noreturn));
-extern int savefile(FILE *, long);
-extern int suspend(void);
-extern int resume(void);
-extern int restore(FILE *);