int game_frame_delay;
boolean sp_show_border_elements;
boolean small_game_graphics;
+ boolean show_snapshot_buttons;
char *graphics_set;
char *sounds_set;
void SetWindowBackgroundBitmap(Bitmap *);
void SetMainBackgroundBitmap(Bitmap *);
void SetDoorBackgroundBitmap(Bitmap *);
+void SetRedrawMaskFromArea(int, int, int, int);
void LimitScreenUpdates(boolean);