extern tview_t* curses_tv_init(const char *fn, const char *fn_fa, const char *samples);
extern tview_t* html_tv_init(const char *fn, const char *fn_fa, const char *samples);
extern tview_t* text_tv_init(const char *fn, const char *fn_fa, const char *samples);
extern tview_t* curses_tv_init(const char *fn, const char *fn_fa, const char *samples);
extern tview_t* html_tv_init(const char *fn, const char *fn_fa, const char *samples);
extern tview_t* text_tv_init(const char *fn, const char *fn_fa, const char *samples);