extern void pspeak(vocab_t, enum speaktype, int, bool, ...);
extern void rspeak(vocab_t, ...);
extern void echo_input(FILE*, const char*, const char*);
extern void pspeak(vocab_t, enum speaktype, int, bool, ...);
extern void rspeak(vocab_t, ...);
extern void echo_input(FILE*, const char*, const char*);