+#define EL_DEFAULT_EXPLODING 603
+#define EL_KETTLE_EXPLODING 604
+
+/* dummy elements (never used as game elements, only used as graphics) */
+#define EL_MM_MASK_MCDUFFIN_RIGHT 700
+#define EL_MM_MASK_MCDUFFIN_UP 701
+#define EL_MM_MASK_MCDUFFIN_LEFT 702
+#define EL_MM_MASK_MCDUFFIN_DOWN 703
+#define EL_MM_MASK_GRID_1 704
+#define EL_MM_MASK_GRID_2 705
+#define EL_MM_MASK_GRID_3 706
+#define EL_MM_MASK_GRID_4 707
+#define EL_MM_MASK_RECTANGE 708
+#define EL_MM_MASK_CIRCLE 709