+#define EL_DF_MIRROR_FIXED_START 1233
+#define EL_DF_MIRROR_FIXED_1 (EL_DF_MIRROR_FIXED_START + 0)
+#define EL_DF_MIRROR_FIXED_2 (EL_DF_MIRROR_FIXED_START + 1)
+#define EL_DF_MIRROR_FIXED_3 (EL_DF_MIRROR_FIXED_START + 2)
+#define EL_DF_MIRROR_FIXED_4 (EL_DF_MIRROR_FIXED_START + 3)
+#define EL_DF_MIRROR_FIXED_5 (EL_DF_MIRROR_FIXED_START + 4)
+#define EL_DF_MIRROR_FIXED_6 (EL_DF_MIRROR_FIXED_START + 5)
+#define EL_DF_MIRROR_FIXED_7 (EL_DF_MIRROR_FIXED_START + 6)
+#define EL_DF_MIRROR_FIXED_8 (EL_DF_MIRROR_FIXED_START + 7)
+#define EL_DF_MIRROR_FIXED_9 (EL_DF_MIRROR_FIXED_START + 8)
+#define EL_DF_MIRROR_FIXED_10 (EL_DF_MIRROR_FIXED_START + 9)
+#define EL_DF_MIRROR_FIXED_11 (EL_DF_MIRROR_FIXED_START + 10)
+#define EL_DF_MIRROR_FIXED_12 (EL_DF_MIRROR_FIXED_START + 11)
+#define EL_DF_MIRROR_FIXED_13 (EL_DF_MIRROR_FIXED_START + 12)
+#define EL_DF_MIRROR_FIXED_14 (EL_DF_MIRROR_FIXED_START + 13)
+#define EL_DF_MIRROR_FIXED_15 (EL_DF_MIRROR_FIXED_START + 14)
+#define EL_DF_MIRROR_FIXED_16 (EL_DF_MIRROR_FIXED_START + 15)
+#define EL_DF_MIRROR_FIXED_END EL_DF_MIRROR_FIXED_16
+
+#define EL_DF_SLOPE_START 1249
+#define EL_DF_SLOPE_1 (EL_DF_SLOPE_START + 0)
+#define EL_DF_SLOPE_2 (EL_DF_SLOPE_START + 1)
+#define EL_DF_SLOPE_3 (EL_DF_SLOPE_START + 2)
+#define EL_DF_SLOPE_4 (EL_DF_SLOPE_START + 3)
+#define EL_DF_SLOPE_END EL_DF_SLOPE_4
+
+#define EL_MM_END_3 EL_DF_SLOPE_END
+#define EL_DF_END_2 EL_DF_SLOPE_END
+
+// BD style elements (normal)
+#define EL_BD_EMPTY_SPACE 1253
+#define EL_BD_EMPTY EL_BD_EMPTY_SPACE
+#define EL_BD_SAND 1254
+#define EL_BD_SAND_2 1255
+#define EL_BD_SAND_BALL 1256
+#define EL_BD_SAND_LOOSE 1257
+#define EL_BD_SAND_SLOPED_UP_RIGHT 1258
+#define EL_BD_SAND_SLOPED_UP_LEFT 1259
+#define EL_BD_SAND_SLOPED_DOWN_LEFT 1260
+#define EL_BD_SAND_SLOPED_DOWN_RIGHT 1261
+#define EL_BD_SAND_GLUED 1262
+#define EL_BD_WALL_SLOPED_UP_RIGHT 1263
+#define EL_BD_WALL_SLOPED_UP_LEFT 1264
+#define EL_BD_WALL_SLOPED_DOWN_LEFT 1265
+#define EL_BD_WALL_SLOPED_DOWN_RIGHT 1266
+#define EL_BD_WALL_NON_SLOPED 1267
+#define EL_BD_WALL_DIGGABLE 1268
+#define EL_BD_WALL_DIAMOND 1269
+#define EL_BD_WALL_KEY_1 1270
+#define EL_BD_WALL_KEY_2 1271
+#define EL_BD_WALL_KEY_3 1272
+#define EL_BD_FALLING_WALL 1273
+#define EL_BD_STEELWALL 1274
+#define EL_BD_STEELWALL_SLOPED_UP_RIGHT 1275
+#define EL_BD_STEELWALL_SLOPED_UP_LEFT 1276
+#define EL_BD_STEELWALL_SLOPED_DOWN_LEFT 1277
+#define EL_BD_STEELWALL_SLOPED_DOWN_RIGHT 1278
+#define EL_BD_STEELWALL_EXPLODABLE 1279
+#define EL_BD_STEELWALL_DIGGABLE 1280
+#define EL_BD_EXPANDABLE_WALL_HORIZONTAL 1281
+#define EL_BD_EXPANDABLE_WALL_VERTICAL 1282
+#define EL_BD_EXPANDABLE_WALL_ANY 1283
+#define EL_BD_EXPANDABLE_STEELWALL_HORIZONTAL 1284
+#define EL_BD_EXPANDABLE_STEELWALL_VERTICAL 1285
+#define EL_BD_EXPANDABLE_STEELWALL_ANY 1286
+#define EL_BD_EXPANDABLE_WALL_SWITCH 1287
+#define EL_BD_EXPANDABLE_WALL_SWITCH_ACTIVE 1288
+#define EL_BD_INBOX 1289
+#define EL_BD_EXIT_CLOSED 1290
+#define EL_BD_EXIT_OPEN 1291
+#define EL_BD_INVISIBLE_EXIT_CLOSED 1292
+#define EL_BD_INVISIBLE_EXIT_OPEN 1293
+#define EL_BD_FLYING_ROCK 1294
+#define EL_BD_MEGA_ROCK 1295
+#define EL_BD_ROCK_GLUED 1296
+#define EL_BD_FLYING_DIAMOND 1297
+#define EL_BD_DIAMOND_GLUED 1298
+#define EL_BD_DIAMOND_KEY 1299
+#define EL_BD_TRAPPED_DIAMOND 1300
+#define EL_BD_NUT 1301
+#define EL_BD_AMOEBA_2 1302
+#define EL_BD_BLADDER 1303
+#define EL_BD_BLADDER_SPENDER 1304
+#define EL_BD_CREATURE_SWITCH 1305
+#define EL_BD_CREATURE_SWITCH_ACTIVE 1306
+#define EL_BD_BITER_SWITCH_1 1307
+#define EL_BD_BITER_SWITCH_2 1308
+#define EL_BD_BITER_SWITCH_3 1309
+#define EL_BD_BITER_SWITCH_4 1310
+#define EL_BD_REPLICATOR 1311
+#define EL_BD_REPLICATOR_ACTIVE 1312
+#define EL_BD_REPLICATOR_SWITCH 1313
+#define EL_BD_REPLICATOR_SWITCH_ACTIVE 1314
+#define EL_BD_CONVEYOR_LEFT 1315
+#define EL_BD_CONVEYOR_LEFT_ACTIVE 1316
+#define EL_BD_CONVEYOR_RIGHT 1317
+#define EL_BD_CONVEYOR_RIGHT_ACTIVE 1318
+#define EL_BD_CONVEYOR_SWITCH 1319
+#define EL_BD_CONVEYOR_SWITCH_ACTIVE 1320
+#define EL_BD_CONVEYOR_DIR_SWITCH 1321
+#define EL_BD_CONVEYOR_DIR_SWITCH_ACTIVE 1322
+#define EL_BD_GRAVITY_SWITCH 1323
+#define EL_BD_GRAVITY_SWITCH_ACTIVE 1324
+#define EL_BD_ACID 1325
+#define EL_BD_BOX 1326
+#define EL_BD_TIME_PENALTY 1327
+#define EL_BD_GRAVESTONE 1328
+#define EL_BD_CLOCK 1329
+#define EL_BD_POT 1330
+#define EL_BD_PNEUMATIC_HAMMER 1331
+#define EL_BD_TELEPORTER 1332
+#define EL_BD_SKELETON 1333
+#define EL_BD_WATER 1334
+#define EL_BD_KEY_1 1335
+#define EL_BD_KEY_2 1336
+#define EL_BD_KEY_3 1337
+#define EL_BD_GATE_1 1338
+#define EL_BD_GATE_2 1339
+#define EL_BD_GATE_3 1340
+#define EL_BD_LAVA 1341
+#define EL_BD_SWEET 1342
+#define EL_BD_VOODOO_DOLL 1343
+#define EL_BD_SLIME 1344
+#define EL_BD_WAITING_ROCK 1345
+#define EL_BD_CHASING_ROCK 1346
+#define EL_BD_GHOST 1347
+#define EL_BD_COW 1348
+#define EL_BD_COW_LEFT 1349
+#define EL_BD_COW_UP 1350
+#define EL_BD_COW_RIGHT 1351
+#define EL_BD_COW_DOWN 1352
+#define EL_BD_BUTTERFLY_2 1353
+#define EL_BD_BUTTERFLY_2_RIGHT 1354
+#define EL_BD_BUTTERFLY_2_UP 1355
+#define EL_BD_BUTTERFLY_2_LEFT 1356
+#define EL_BD_BUTTERFLY_2_DOWN 1357
+#define EL_BD_FIREFLY_2 1358
+#define EL_BD_FIREFLY_2_RIGHT 1359
+#define EL_BD_FIREFLY_2_UP 1360
+#define EL_BD_FIREFLY_2_LEFT 1361
+#define EL_BD_FIREFLY_2_DOWN 1362
+#define EL_BD_STONEFLY 1363
+#define EL_BD_STONEFLY_RIGHT 1364
+#define EL_BD_STONEFLY_UP 1365
+#define EL_BD_STONEFLY_LEFT 1366
+#define EL_BD_STONEFLY_DOWN 1367
+#define EL_BD_BITER 1368
+#define EL_BD_BITER_RIGHT 1369
+#define EL_BD_BITER_UP 1370
+#define EL_BD_BITER_LEFT 1371
+#define EL_BD_BITER_DOWN 1372
+#define EL_BD_DRAGONFLY 1373
+#define EL_BD_DRAGONFLY_RIGHT 1374
+#define EL_BD_DRAGONFLY_UP 1375
+#define EL_BD_DRAGONFLY_LEFT 1376
+#define EL_BD_DRAGONFLY_DOWN 1377
+#define EL_BD_BOMB 1378
+#define EL_BD_NITRO_PACK 1379
+#define EL_BD_PLAYER 1380
+#define EL_BD_PLAYER_WITH_BOMB 1381
+#define EL_BD_PLAYER_GLUED 1382
+#define EL_BD_PLAYER_STIRRING 1383
+#define EL_BD_FAKE_BONUS 1384
+#define EL_BD_COVERED 1385
+
+// BD style elements ("effects"; mostly runtime elements, but can also be stored in level file)
+#define EL_BD_SAND_BALL_FALLING 1386
+#define EL_BD_SAND_LOOSE_FALLING 1387
+#define EL_BD_ROCK_FALLING 1388
+#define EL_BD_FLYING_ROCK_FLYING 1389
+#define EL_BD_MEGA_ROCK_FALLING 1390
+#define EL_BD_DIAMOND_FALLING 1391
+#define EL_BD_FLYING_DIAMOND_FLYING 1392
+#define EL_BD_NUT_FALLING 1393
+#define EL_BD_FALLING_WALL_FALLING 1394
+#define EL_BD_NITRO_PACK_FALLING 1395
+#define EL_BD_WATER_1 1396
+#define EL_BD_WATER_2 1397
+#define EL_BD_WATER_3 1398
+#define EL_BD_WATER_4 1399
+#define EL_BD_WATER_5 1400
+#define EL_BD_WATER_6 1401
+#define EL_BD_WATER_7 1402
+#define EL_BD_WATER_8 1403
+#define EL_BD_WATER_9 1404
+#define EL_BD_WATER_10 1405
+#define EL_BD_WATER_11 1406
+#define EL_BD_WATER_12 1407
+#define EL_BD_WATER_13 1408
+#define EL_BD_WATER_14 1409
+#define EL_BD_WATER_15 1410
+#define EL_BD_WATER_16 1411
+#define EL_BD_COW_ENCLOSED_1 1412
+#define EL_BD_COW_ENCLOSED_2 1413
+#define EL_BD_COW_ENCLOSED_3 1414
+#define EL_BD_COW_ENCLOSED_4 1415
+#define EL_BD_COW_ENCLOSED_5 1416
+#define EL_BD_COW_ENCLOSED_6 1417
+#define EL_BD_COW_ENCLOSED_7 1418
+#define EL_BD_BLADDER_1 1419
+#define EL_BD_BLADDER_2 1420
+#define EL_BD_BLADDER_3 1421
+#define EL_BD_BLADDER_4 1422
+#define EL_BD_BLADDER_5 1423
+#define EL_BD_BLADDER_6 1424
+#define EL_BD_BLADDER_7 1425
+#define EL_BD_BLADDER_8 1426
+#define EL_BD_PLAYER_GROWING_1 1427
+#define EL_BD_PLAYER_GROWING_2 1428
+#define EL_BD_PLAYER_GROWING_3 1429
+#define EL_BD_BOMB_TICKING_1 1430
+#define EL_BD_BOMB_TICKING_2 1431
+#define EL_BD_BOMB_TICKING_3 1432
+#define EL_BD_BOMB_TICKING_4 1433
+#define EL_BD_BOMB_TICKING_5 1434
+#define EL_BD_BOMB_TICKING_6 1435
+#define EL_BD_BOMB_TICKING_7 1436
+#define EL_BD_CLOCK_GROWING_1 1437
+#define EL_BD_CLOCK_GROWING_2 1438
+#define EL_BD_CLOCK_GROWING_3 1439
+#define EL_BD_CLOCK_GROWING_4 1440
+#define EL_BD_DIAMOND_GROWING_1 1441
+#define EL_BD_DIAMOND_GROWING_2 1442
+#define EL_BD_DIAMOND_GROWING_3 1443
+#define EL_BD_DIAMOND_GROWING_4 1444
+#define EL_BD_DIAMOND_GROWING_5 1445
+#define EL_BD_EXPLODING_1 1446
+#define EL_BD_EXPLODING_2 1447
+#define EL_BD_EXPLODING_3 1448
+#define EL_BD_EXPLODING_4 1449
+#define EL_BD_EXPLODING_5 1450
+#define EL_BD_ROCK_GROWING_1 1451
+#define EL_BD_ROCK_GROWING_2 1452
+#define EL_BD_ROCK_GROWING_3 1453
+#define EL_BD_ROCK_GROWING_4 1454
+#define EL_BD_STEELWALL_GROWING_1 1455
+#define EL_BD_STEELWALL_GROWING_2 1456
+#define EL_BD_STEELWALL_GROWING_3 1457
+#define EL_BD_STEELWALL_GROWING_4 1458
+#define EL_BD_GHOST_EXPLODING_1 1459
+#define EL_BD_GHOST_EXPLODING_2 1460
+#define EL_BD_GHOST_EXPLODING_3 1461
+#define EL_BD_GHOST_EXPLODING_4 1462
+#define EL_BD_BOMB_EXPLODING_1 1463
+#define EL_BD_BOMB_EXPLODING_2 1464
+#define EL_BD_BOMB_EXPLODING_3 1465
+#define EL_BD_BOMB_EXPLODING_4 1466
+#define EL_BD_NITRO_PACK_EXPLODING 1467
+#define EL_BD_NITRO_PACK_EXPLODING_1 1468
+#define EL_BD_NITRO_PACK_EXPLODING_2 1469
+#define EL_BD_NITRO_PACK_EXPLODING_3 1470
+#define EL_BD_NITRO_PACK_EXPLODING_4 1471
+#define EL_BD_AMOEBA_2_EXPLODING_1 1472
+#define EL_BD_AMOEBA_2_EXPLODING_2 1473
+#define EL_BD_AMOEBA_2_EXPLODING_3 1474
+#define EL_BD_AMOEBA_2_EXPLODING_4 1475
+#define EL_BD_NUT_BREAKING_1 1476
+#define EL_BD_NUT_BREAKING_2 1477
+#define EL_BD_NUT_BREAKING_3 1478
+#define EL_BD_NUT_BREAKING_4 1479
+
+#define NUM_FILE_ELEMENTS 1480