+#define EL_BOMB_ACTIVE 505
+#define EL_MINE_ACTIVE 506
+#define EL_ENVELOPE_1_OPENING 507
+#define EL_ENVELOPE_2_OPENING 508
+#define EL_ENVELOPE_3_OPENING 509
+#define EL_ENVELOPE_4_OPENING 510
+
+#define EL_ENVELOPE_OPENING_START EL_ENVELOPE_1_OPENING
+#define EL_ENVELOPE_OPENING_END EL_ENVELOPE_4_OPENING