+
+ EL_EXPANDABLE_STEELWALL_HORIZONTAL,
+ EL_EXPANDABLE_STEELWALL_VERTICAL,
+ EL_EXPANDABLE_STEELWALL_ANY,
+ EL_EMPTY,
+
+ EL_EM_EXIT_CLOSED,
+ EL_EM_EXIT_OPEN,
+ EL_EM_STEEL_EXIT_CLOSED,
+ EL_EM_STEEL_EXIT_OPEN,
+
+ EL_DC_KEY_WHITE,
+ EL_DC_GATE_WHITE,
+ EL_DC_GATE_WHITE_GRAY,
+ EL_DC_GATE_FAKE_GRAY,
+
+ EL_DC_MAGIC_WALL,
+ EL_QUICKSAND_FAST_EMPTY,
+ EL_QUICKSAND_FAST_FULL,
+ EL_EMPTY,