void SetDrawDeactivationMask(int);
int GetDrawDeactivationMask(void);
void SetDrawBackgroundMask(int);
-void SetWindowBackgroundBitmap(Bitmap *);
-void SetMainBackgroundBitmap(Bitmap *);
-void SetDoorBackgroundBitmap(Bitmap *);
+void SetBackgroundBitmap(Bitmap *, int, int, int, int, int);
void SetRedrawMaskFromArea(int, int, int, int);
void LimitScreenUpdates(boolean);