+/* "real" level file elements */
+#define EL_UNDEFINED -1
+
+#define EL_EMPTY_SPACE 0
+#define EL_EMPTY EL_EMPTY_SPACE
+#define EL_SAND 1
+#define EL_WALL 2
+#define EL_WALL_CRUMBLED 3
+#define EL_ROCK 4
+#define EL_KEY_OBSOLETE 5 /* obsolete; mapped to EL_KEY1 */
+#define EL_EMERALD 6
+#define EL_EXIT_CLOSED 7
+#define EL_PLAYER_OBSOLETE 8 /* obsolete; mapped to EL_PLAYER1 */
+#define EL_BUG 9
+#define EL_SPACESHIP 10
+#define EL_YAMYAM 11
+#define EL_ROBOT 12
+#define EL_STEELWALL 13
+#define EL_DIAMOND 14
+#define EL_AMOEBA_DEAD 15
+#define EL_QUICKSAND_EMPTY 16
+#define EL_QUICKSAND_FULL 17
+#define EL_AMOEBA_DROP 18
+#define EL_BOMB 19
+#define EL_MAGIC_WALL 20
+#define EL_SPEED_PILL 21
+#define EL_ACID 22
+#define EL_AMOEBA_WET 23
+#define EL_AMOEBA_DRY 24
+#define EL_NUT 25
+#define EL_GAMEOFLIFE 26
+#define EL_BIOMAZE 27
+#define EL_DYNAMITE_ACTIVE 28
+#define EL_STONEBLOCK 29
+#define EL_ROBOT_WHEEL 30
+#define EL_ROBOT_WHEEL_ACTIVE 31
+#define EL_KEY1 32
+#define EL_KEY2 33
+#define EL_KEY3 34
+#define EL_KEY4 35
+#define EL_GATE1 36
+#define EL_GATE2 37
+#define EL_GATE3 38
+#define EL_GATE4 39
+#define EL_GATE1_GRAY 40
+#define EL_GATE2_GRAY 41
+#define EL_GATE3_GRAY 42
+#define EL_GATE4_GRAY 43
+#define EL_DYNAMITE 44
+#define EL_PACMAN 45
+#define EL_INVISIBLE_WALL 46
+#define EL_LAMP 47
+#define EL_LAMP_ACTIVE 48
+#define EL_WALL_EMERALD 49
+#define EL_WALL_DIAMOND 50
+#define EL_AMOEBA_FULL 51
+#define EL_BD_AMOEBA 52
+#define EL_TIME_ORB_FULL 53
+#define EL_TIME_ORB_EMPTY 54
+#define EL_WALL_GROWING 55
+#define EL_BD_DIAMOND 56
+#define EL_EMERALD_YELLOW 57
+#define EL_WALL_BD_DIAMOND 58
+#define EL_WALL_EMERALD_YELLOW 59
+#define EL_DARK_YAMYAM 60
+#define EL_BD_MAGIC_WALL 61
+#define EL_INVISIBLE_STEELWALL 62
+
+#define EL_UNUSED_63 63
+
+#define EL_DYNABOMB_NR 64
+#define EL_DYNABOMB_SZ 65
+#define EL_DYNABOMB_XL 66
+#define EL_SOKOBAN_OBJECT 67
+#define EL_SOKOBAN_FIELD_EMPTY 68
+#define EL_SOKOBAN_FIELD_FULL 69
+#define EL_BD_BUTTERFLY_RIGHT 70
+#define EL_BD_BUTTERFLY_UP 71
+#define EL_BD_BUTTERFLY_LEFT 72
+#define EL_BD_BUTTERFLY_DOWN 73
+#define EL_BD_FIREFLY_RIGHT 74
+#define EL_BD_FIREFLY_UP 75
+#define EL_BD_FIREFLY_LEFT 76
+#define EL_BD_FIREFLY_DOWN 77
+#define EL_BD_BUTTERFLY_1 EL_BD_BUTTERFLY_DOWN
+#define EL_BD_BUTTERFLY_2 EL_BD_BUTTERFLY_LEFT
+#define EL_BD_BUTTERFLY_3 EL_BD_BUTTERFLY_UP
+#define EL_BD_BUTTERFLY_4 EL_BD_BUTTERFLY_RIGHT
+#define EL_BD_FIREFLY_1 EL_BD_FIREFLY_LEFT
+#define EL_BD_FIREFLY_2 EL_BD_FIREFLY_DOWN
+#define EL_BD_FIREFLY_3 EL_BD_FIREFLY_RIGHT
+#define EL_BD_FIREFLY_4 EL_BD_FIREFLY_UP
+#define EL_BD_BUTTERFLY 78
+#define EL_BD_FIREFLY 79
+#define EL_PLAYER1 80
+#define EL_PLAYER2 81
+#define EL_PLAYER3 82
+#define EL_PLAYER4 83
+#define EL_BUG_RIGHT 84
+#define EL_BUG_UP 85
+#define EL_BUG_LEFT 86
+#define EL_BUG_DOWN 87
+#define EL_SPACESHIP_RIGHT 88
+#define EL_SPACESHIP_UP 89
+#define EL_SPACESHIP_LEFT 90
+#define EL_SPACESHIP_DOWN 91
+#define EL_PACMAN_RIGHT 92
+#define EL_PACMAN_UP 93
+#define EL_PACMAN_LEFT 94
+#define EL_PACMAN_DOWN 95
+#define EL_EMERALD_RED 96
+#define EL_EMERALD_PURPLE 97
+#define EL_WALL_EMERALD_RED 98
+#define EL_WALL_EMERALD_PURPLE 99
+#define EL_ACIDPOOL_TOPLEFT 100
+#define EL_ACIDPOOL_TOPRIGHT 101
+#define EL_ACIDPOOL_BOTTOMLEFT 102
+#define EL_ACIDPOOL_BOTTOM 103
+#define EL_ACIDPOOL_BOTTOMRIGHT 104
+#define EL_BD_WALL 105
+#define EL_BD_ROCK 106
+#define EL_EXIT_OPEN 107
+#define EL_BLACK_ORB 108
+#define EL_AMOEBA_TO_DIAMOND 109
+#define EL_MOLE 110
+#define EL_PENGUIN 111
+#define EL_SATELLITE 112
+#define EL_ARROW_BLUE_LEFT 113
+#define EL_ARROW_BLUE_RIGHT 114
+#define EL_ARROW_BLUE_UP 115
+#define EL_ARROW_BLUE_DOWN 116
+#define EL_PIG 117
+#define EL_DRAGON 118
+
+#define EL_EM_KEY1_FILE 119
+
+#define EL_CHAR_START 120
+#define EL_CHAR_ASCII0 (EL_CHAR_START - 32)
+#define EL_CHAR_ASCII0_START (EL_CHAR_ASCII0 + 32)
+#define EL_CHAR_EXCLAM (EL_CHAR_ASCII0 + 33)
+#define EL_CHAR_QUOTEDBL (EL_CHAR_ASCII0 + 34)
+#define EL_CHAR_NUMBERSIGN (EL_CHAR_ASCII0 + 35)
+#define EL_CHAR_DOLLAR (EL_CHAR_ASCII0 + 36)
+#define EL_CHAR_PROCENT (EL_CHAR_ASCII0 + 37)
+#define EL_CHAR_AMPERSAND (EL_CHAR_ASCII0 + 38)
+#define EL_CHAR_APOSTROPHE (EL_CHAR_ASCII0 + 39)
+#define EL_CHAR_PARENLEFT (EL_CHAR_ASCII0 + 40)
+#define EL_CHAR_PARENRIGHT (EL_CHAR_ASCII0 + 41)
+#define EL_CHAR_ASTERISK (EL_CHAR_ASCII0 + 42)
+#define EL_CHAR_PLUS (EL_CHAR_ASCII0 + 43)
+#define EL_CHAR_COMMA (EL_CHAR_ASCII0 + 44)
+#define EL_CHAR_MINUS (EL_CHAR_ASCII0 + 45)
+#define EL_CHAR_PERIOD (EL_CHAR_ASCII0 + 46)
+#define EL_CHAR_SLASH (EL_CHAR_ASCII0 + 47)
+#define EL_CHAR_0 (EL_CHAR_ASCII0 + 48)
+#define EL_CHAR_9 (EL_CHAR_ASCII0 + 57)
+#define EL_CHAR_COLON (EL_CHAR_ASCII0 + 58)
+#define EL_CHAR_SEMICOLON (EL_CHAR_ASCII0 + 59)
+#define EL_CHAR_LESS (EL_CHAR_ASCII0 + 60)
+#define EL_CHAR_EQUAL (EL_CHAR_ASCII0 + 61)
+#define EL_CHAR_GREATER (EL_CHAR_ASCII0 + 62)
+#define EL_CHAR_QUESTION (EL_CHAR_ASCII0 + 63)
+#define EL_CHAR_AT (EL_CHAR_ASCII0 + 64)
+#define EL_CHAR_A (EL_CHAR_ASCII0 + 65)
+#define EL_CHAR_Z (EL_CHAR_ASCII0 + 90)
+#define EL_CHAR_AE (EL_CHAR_ASCII0 + 91)
+#define EL_CHAR_OE (EL_CHAR_ASCII0 + 92)
+#define EL_CHAR_UE (EL_CHAR_ASCII0 + 93)
+#define EL_CHAR_COPYRIGHT (EL_CHAR_ASCII0 + 94)
+#define EL_CHAR_UNDERSCORE (EL_CHAR_ASCII0 + 95)
+#define EL_CHAR_EMPTY (EL_CHAR_ASCII0 + 96)
+#define EL_CHAR_DEGREE (EL_CHAR_ASCII0 + 97)
+#define EL_CHAR_TM (EL_CHAR_ASCII0 + 98)
+#define EL_CHAR_CURSOR (EL_CHAR_ASCII0 + 99)
+#define EL_CHAR_ASCII0_END (EL_CHAR_ASCII0 + 111)
+#define EL_CHAR_END (EL_CHAR_START + 79)
+
+#define EL_CHAR(x) ((x) == 'Ä' ? EL_CHAR_AE : \
+ (x) == 'Ö' ? EL_CHAR_OE : \
+ (x) == 'Ü' ? EL_CHAR_UE : \
+ (x) == '^' ? EL_CHAR_COPYRIGHT : \
+ (x) == '_' ? EL_CHAR_UNDERSCORE : \
+ (x) == '°' ? EL_CHAR_DEGREE : \
+ (x) == '´' ? EL_CHAR_TM : \
+ (x) == '|' ? EL_CHAR_CURSOR : \
+ EL_CHAR_A + (x) - 'A')
+
+#define EL_WALL_GROWING_X 200
+#define EL_WALL_GROWING_Y 201
+#define EL_WALL_GROWING_XY 202
+
+#define EL_EM_GATE1 203
+#define EL_EM_GATE2 204
+#define EL_EM_GATE3 205
+#define EL_EM_GATE4 206
+
+#define EL_EM_KEY2_FILE 207
+#define EL_EM_KEY3_FILE 208
+#define EL_EM_KEY4_FILE 209
+
+#define EL_SP_START 210
+#define EL_SP_EMPTY_SPACE (EL_SP_START + 0)
+#define EL_SP_EMPTY EL_SP_EMPTY_SPACE
+#define EL_SP_ZONK (EL_SP_START + 1)
+#define EL_SP_BASE (EL_SP_START + 2)
+#define EL_SP_MURPHY (EL_SP_START + 3)
+#define EL_SP_INFOTRON (EL_SP_START + 4)
+#define EL_SP_CHIP_SINGLE (EL_SP_START + 5)
+#define EL_SP_HARD_GRAY (EL_SP_START + 6)
+#define EL_SP_EXIT_CLOSED (EL_SP_START + 7)
+#define EL_SP_DISK_ORANGE (EL_SP_START + 8)
+#define EL_SP_PORT1_RIGHT (EL_SP_START + 9)
+#define EL_SP_PORT1_DOWN (EL_SP_START + 10)
+#define EL_SP_PORT1_LEFT (EL_SP_START + 11)
+#define EL_SP_PORT1_UP (EL_SP_START + 12)
+#define EL_SP_PORT2_RIGHT (EL_SP_START + 13)
+#define EL_SP_PORT2_DOWN (EL_SP_START + 14)
+#define EL_SP_PORT2_LEFT (EL_SP_START + 15)
+#define EL_SP_PORT2_UP (EL_SP_START + 16)
+#define EL_SP_SNIKSNAK (EL_SP_START + 17)
+#define EL_SP_DISK_YELLOW (EL_SP_START + 18)
+#define EL_SP_TERMINAL (EL_SP_START + 19)
+#define EL_SP_DISK_RED (EL_SP_START + 20)
+#define EL_SP_PORT_Y (EL_SP_START + 21)
+#define EL_SP_PORT_X (EL_SP_START + 22)
+#define EL_SP_PORT_XY (EL_SP_START + 23)
+#define EL_SP_ELECTRON (EL_SP_START + 24)
+#define EL_SP_BUGGY_BASE (EL_SP_START + 25)
+#define EL_SP_CHIP_LEFT (EL_SP_START + 26)
+#define EL_SP_CHIP_RIGHT (EL_SP_START + 27)
+#define EL_SP_HARD_BASE1 (EL_SP_START + 28)
+#define EL_SP_HARD_GREEN (EL_SP_START + 29)
+#define EL_SP_HARD_BLUE (EL_SP_START + 30)
+#define EL_SP_HARD_RED (EL_SP_START + 31)
+#define EL_SP_HARD_YELLOW (EL_SP_START + 32)
+#define EL_SP_HARD_BASE2 (EL_SP_START + 33)
+#define EL_SP_HARD_BASE3 (EL_SP_START + 34)
+#define EL_SP_HARD_BASE4 (EL_SP_START + 35)
+#define EL_SP_HARD_BASE5 (EL_SP_START + 36)
+#define EL_SP_HARD_BASE6 (EL_SP_START + 37)
+#define EL_SP_CHIP_UPPER (EL_SP_START + 38)
+#define EL_SP_CHIP_LOWER (EL_SP_START + 39)
+#define EL_SP_END (EL_SP_START + 39)
+
+#define EL_EM_GATE1_GRAY 250
+#define EL_EM_GATE2_GRAY 251
+#define EL_EM_GATE3_GRAY 252
+#define EL_EM_GATE4_GRAY 253
+
+#define EL_UNUSED_254 254
+#define EL_UNUSED_255 255
+
+#define EL_PEARL 256
+#define EL_CRYSTAL 257
+#define EL_WALL_PEARL 258
+#define EL_WALL_CRYSTAL 259
+#define EL_DOOR_WHITE 260
+#define EL_DOOR_WHITE_GRAY 261
+#define EL_KEY_WHITE 262
+#define EL_SHIELD_NORMAL 263
+#define EL_EXTRA_TIME 264
+#define EL_SWITCHGATE_OPEN 265
+#define EL_SWITCHGATE_CLOSED 266
+#define EL_SWITCHGATE_SWITCH_UP 267
+#define EL_SWITCHGATE_SWITCH_DOWN 268
+
+#define EL_UNUSED_269 269
+#define EL_UNUSED_270 270
+
+#define EL_CONVEYOR_BELT1_LEFT 271
+#define EL_CONVEYOR_BELT1_MIDDLE 272
+#define EL_CONVEYOR_BELT1_RIGHT 273
+#define EL_CONVEYOR_BELT1_SWITCH_LEFT 274
+#define EL_CONVEYOR_BELT1_SWITCH_MIDDLE 275
+#define EL_CONVEYOR_BELT1_SWITCH_RIGHT 276
+#define EL_CONVEYOR_BELT2_LEFT 277
+#define EL_CONVEYOR_BELT2_MIDDLE 278
+#define EL_CONVEYOR_BELT2_RIGHT 279
+#define EL_CONVEYOR_BELT2_SWITCH_LEFT 280
+#define EL_CONVEYOR_BELT2_SWITCH_MIDDLE 281
+#define EL_CONVEYOR_BELT2_SWITCH_RIGHT 282
+#define EL_CONVEYOR_BELT3_LEFT 283
+#define EL_CONVEYOR_BELT3_MIDDLE 284
+#define EL_CONVEYOR_BELT3_RIGHT 285
+#define EL_CONVEYOR_BELT3_SWITCH_LEFT 286
+#define EL_CONVEYOR_BELT3_SWITCH_MIDDLE 287
+#define EL_CONVEYOR_BELT3_SWITCH_RIGHT 288
+#define EL_CONVEYOR_BELT4_LEFT 289
+#define EL_CONVEYOR_BELT4_MIDDLE 290
+#define EL_CONVEYOR_BELT4_RIGHT 291
+#define EL_CONVEYOR_BELT4_SWITCH_LEFT 292
+#define EL_CONVEYOR_BELT4_SWITCH_MIDDLE 293
+#define EL_CONVEYOR_BELT4_SWITCH_RIGHT 294
+#define EL_LANDMINE 295
+#define EL_ENVELOPE 296
+#define EL_LIGHT_SWITCH 297
+#define EL_LIGHT_SWITCH_ACTIVE 298
+#define EL_SIGN_EXCLAMATION 299
+#define EL_SIGN_RADIOACTIVITY 300
+#define EL_SIGN_STOP 301
+#define EL_SIGN_WHEELCHAIR 302
+#define EL_SIGN_PARKING 303
+#define EL_SIGN_ONEWAY 304
+#define EL_SIGN_HEART 305
+#define EL_SIGN_TRIANGLE 306
+#define EL_SIGN_ROUND 307
+#define EL_SIGN_EXIT 308
+#define EL_SIGN_YINYANG 309
+#define EL_SIGN_OTHER 310
+#define EL_MOLE_LEFT 311
+#define EL_MOLE_RIGHT 312
+#define EL_MOLE_UP 313
+#define EL_MOLE_DOWN 314
+#define EL_STEELWALL_SLANTED 315
+#define EL_INVISIBLE_SAND 316
+#define EL_DX_UNKNOWN_15 317
+#define EL_DX_UNKNOWN_42 318
+
+#define EL_UNUSED_319 319
+#define EL_UNUSED_320 320
+
+#define EL_SHIELD_DEADLY 321
+#define EL_TIMEGATE_OPEN 322
+#define EL_TIMEGATE_CLOSED 323
+#define EL_TIMEGATE_SWITCH_ACTIVE 324
+#define EL_TIMEGATE_SWITCH 325
+
+#define EL_BALLOON 326
+#define EL_BALLOON_SEND_LEFT 327
+#define EL_BALLOON_SEND_RIGHT 328
+#define EL_BALLOON_SEND_UP 329
+#define EL_BALLOON_SEND_DOWN 330
+#define EL_BALLOON_SEND_ANY_DIRECTION 331
+
+#define EL_EMC_STEELWALL1 332
+#define EL_EMC_STEELWALL2 333
+#define EL_EMC_STEELWALL3 334
+#define EL_EMC_STEELWALL4 335
+#define EL_EMC_WALL_PILLAR_UPPER 336
+#define EL_EMC_WALL_PILLAR_MIDDLE 337
+#define EL_EMC_WALL_PILLAR_LOWER 338
+#define EL_EMC_WALL4 339
+#define EL_EMC_WALL5 340
+#define EL_EMC_WALL6 341
+#define EL_EMC_WALL7 342
+#define EL_EMC_WALL8 343
+
+#define EL_TUBE_ALL 344
+#define EL_TUBE_VERTICAL 345
+#define EL_TUBE_HORIZONTAL 346
+#define EL_TUBE_VERTICAL_LEFT 347
+#define EL_TUBE_VERTICAL_RIGHT 348
+#define EL_TUBE_HORIZONTAL_UP 349
+#define EL_TUBE_HORIZONTAL_DOWN 350
+#define EL_TUBE_LEFT_UP 351
+#define EL_TUBE_LEFT_DOWN 352
+#define EL_TUBE_RIGHT_UP 353
+#define EL_TUBE_RIGHT_DOWN 354
+#define EL_SPRING 355
+#define EL_TRAP 356
+#define EL_DX_SUPABOMB 357
+
+#define EL_UNUSED_358 358
+#define EL_UNUSED_359 359
+
+#define EL_CUSTOM_START 360
+#define EL_CUSTOM_1 (EL_CUSTOM_START + 0)
+#define EL_CUSTOM_128 (EL_CUSTOM_START + 127)
+#define EL_CUSTOM_END (EL_CUSTOM_START + 127)
+
+#define NUM_FILE_ELEMENTS 488