-extern void turn_over(struct World * world, char action);
-
-
-
-/* Save current game data to file "savefile". */
-extern void save_game(struct World * world);
-
-
-
-/* Toggle display of a window "win".
- *
- * Return 0 on success, 1 on (ncurses pad/window memory allocation) error.
- */
-extern uint8_t toggle_window(struct WinMeta * win_meta, struct Win * win);
-
-
-
-/* Try to scroll virtual screen left ("dir" = "-") or right ("dir" = "+"),
- * subject to the limitations provided by the window manager via
- * reset_pad_offset().
- */
-extern void scroll_pad(struct WinMeta * win_meta, char dir);
-
-
-
-/* Try to grow or shrink the active window horizontally ("change" = "*"/"_") or
- * vertically ("change = "+"/"-") by one cell size, subject to the limitations
- * provided by the window manager via resize_active_win().
- *
- * Return 0 on success, 1 on (ncurses pad/window memory allocation) error.
- */
-extern uint8_t growshrink_active_window(struct WinMeta * win_meta, char change);
-