-/* "real" level elements */
-#define EL_LEERRAUM 0
-#define EL_ERDREICH 1
-#define EL_MAUERWERK 2
-#define EL_FELSBODEN 3
-#define EL_FELSBROCKEN 4
-#define EL_SCHLUESSEL 5
-#define EL_EDELSTEIN 6
-#define EL_AUSGANG_ZU 7
-#define EL_SPIELFIGUR 8
-#define EL_KAEFER 9
-#define EL_FLIEGER 10
-#define EL_MAMPFER 11
-#define EL_ROBOT 12
-#define EL_BETON 13
-#define EL_DIAMANT 14
-#define EL_AMOEBE_TOT 15
-#define EL_MORAST_LEER 16
-#define EL_MORAST_VOLL 17
-#define EL_TROPFEN 18
-#define EL_BOMBE 19
-#define EL_SIEB_INAKTIV 20
-#define EL_SPEED_PILL 21
-#define EL_SALZSAEURE 22
-#define EL_AMOEBE_NASS 23
-#define EL_AMOEBE_NORM 24
-#define EL_KOKOSNUSS 25
-#define EL_LIFE 26
-#define EL_LIFE_ASYNC 27
-#define EL_DYNAMITE_ACTIVE 28
-#define EL_BADEWANNE 29
-#define EL_ABLENK_AUS 30
-#define EL_ABLENK_EIN 31
-#define EL_SCHLUESSEL1 32
-#define EL_SCHLUESSEL2 33
-#define EL_SCHLUESSEL3 34
-#define EL_SCHLUESSEL4 35
-#define EL_PFORTE1 36
-#define EL_PFORTE2 37
-#define EL_PFORTE3 38
-#define EL_PFORTE4 39
-#define EL_PFORTE1X 40
-#define EL_PFORTE2X 41
-#define EL_PFORTE3X 42
-#define EL_PFORTE4X 43
-#define EL_DYNAMITE_INACTIVE 44
-#define EL_PACMAN 45
-#define EL_UNSICHTBAR 46
-#define EL_BIRNE_AUS 47
-#define EL_BIRNE_EIN 48
-#define EL_ERZ_EDEL 49
-#define EL_ERZ_DIAM 50
-#define EL_AMOEBE_VOLL 51
-#define EL_AMOEBE_BD 52
-#define EL_ZEIT_VOLL 53
-#define EL_ZEIT_LEER 54
-#define EL_MAUER_LEBT 55
-#define EL_EDELSTEIN_BD 56
-#define EL_EDELSTEIN_GELB 57
-#define EL_ERZ_EDEL_BD 58
-#define EL_ERZ_EDEL_GELB 59
-#define EL_MAMPFER2 60
-#define EL_SIEB2_INAKTIV 61
-#define EL_INVISIBLE_STEEL 62
-
-#define EL_UNUSED_63 63
-
-#define EL_DYNABOMB_NR 64
-#define EL_DYNABOMB_SZ 65
-#define EL_DYNABOMB_XL 66
-#define EL_SOKOBAN_OBJEKT 67
-#define EL_SOKOBAN_FELD_LEER 68
-#define EL_SOKOBAN_FELD_VOLL 69
-#define EL_BUTTERFLY_RIGHT 70
-#define EL_BUTTERFLY_UP 71
-#define EL_BUTTERFLY_LEFT 72
-#define EL_BUTTERFLY_DOWN 73
-#define EL_FIREFLY_RIGHT 74
-#define EL_FIREFLY_UP 75
-#define EL_FIREFLY_LEFT 76
-#define EL_FIREFLY_DOWN 77
-#define EL_BUTTERFLY_1 EL_BUTTERFLY_DOWN
-#define EL_BUTTERFLY_2 EL_BUTTERFLY_LEFT
-#define EL_BUTTERFLY_3 EL_BUTTERFLY_UP
-#define EL_BUTTERFLY_4 EL_BUTTERFLY_RIGHT
-#define EL_FIREFLY_1 EL_FIREFLY_LEFT
-#define EL_FIREFLY_2 EL_FIREFLY_DOWN
-#define EL_FIREFLY_3 EL_FIREFLY_RIGHT
-#define EL_FIREFLY_4 EL_FIREFLY_UP
-#define EL_BUTTERFLY 78
-#define EL_FIREFLY 79
-#define EL_SPIELER1 80
-#define EL_SPIELER2 81
-#define EL_SPIELER3 82
-#define EL_SPIELER4 83
-#define EL_KAEFER_RIGHT 84
-#define EL_KAEFER_UP 85
-#define EL_KAEFER_LEFT 86
-#define EL_KAEFER_DOWN 87
-#define EL_FLIEGER_RIGHT 88
-#define EL_FLIEGER_UP 89
-#define EL_FLIEGER_LEFT 90
-#define EL_FLIEGER_DOWN 91
-#define EL_PACMAN_RIGHT 92
-#define EL_PACMAN_UP 93
-#define EL_PACMAN_LEFT 94
-#define EL_PACMAN_DOWN 95
-#define EL_EDELSTEIN_ROT 96
-#define EL_EDELSTEIN_LILA 97
-#define EL_ERZ_EDEL_ROT 98
-#define EL_ERZ_EDEL_LILA 99
-#define EL_BADEWANNE1 100
-#define EL_BADEWANNE2 101
-#define EL_BADEWANNE3 102
-#define EL_BADEWANNE4 103
-#define EL_BADEWANNE5 104
-
-#define EL_UNUSED_105 105
-#define EL_UNUSED_106 106
-
-#define EL_AUSGANG_AUF 107
-
-#define EL_BLACK_ORB 108
-
-#define EL_AMOEBA2DIAM 109
-#define EL_MOLE 110
-#define EL_PINGUIN 111
-#define EL_SONDE 112
-#define EL_PFEIL_LEFT 113
-#define EL_PFEIL_RIGHT 114
-#define EL_PFEIL_UP 115
-#define EL_PFEIL_DOWN 116
-#define EL_SCHWEIN 117
-#define EL_DRACHE 118
-
-#define EL_EM_KEY_1_FILE 119
-
-#define EL_CHAR_START 120
-#define EL_CHAR_ASCII0 (EL_CHAR_START-32)
-#define EL_CHAR_AUSRUF (EL_CHAR_ASCII0+33)
-#define EL_CHAR_ZOLL (EL_CHAR_ASCII0+34)
-#define EL_CHAR_RAUTE (EL_CHAR_ASCII0+35)
-#define EL_CHAR_DOLLAR (EL_CHAR_ASCII0+36)
-#define EL_CHAR_PROZ (EL_CHAR_ASCII0+37)
-#define EL_CHAR_AMPERSAND (EL_CHAR_ASCII0+38)
-#define EL_CHAR_APOSTR (EL_CHAR_ASCII0+39)
-#define EL_CHAR_KLAMM1 (EL_CHAR_ASCII0+40)
-#define EL_CHAR_KLAMM2 (EL_CHAR_ASCII0+41)
-#define EL_CHAR_MULT (EL_CHAR_ASCII0+42)
-#define EL_CHAR_PLUS (EL_CHAR_ASCII0+43)
-#define EL_CHAR_KOMMA (EL_CHAR_ASCII0+44)
-#define EL_CHAR_MINUS (EL_CHAR_ASCII0+45)
-#define EL_CHAR_PUNKT (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_DOPPEL (EL_CHAR_ASCII0+58)
-#define EL_CHAR_SEMIKL (EL_CHAR_ASCII0+59)
-#define EL_CHAR_LT (EL_CHAR_ASCII0+60)
-#define EL_CHAR_GLEICH (EL_CHAR_ASCII0+61)
-#define EL_CHAR_GT (EL_CHAR_ASCII0+62)
-#define EL_CHAR_FRAGE (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_COPY (EL_CHAR_ASCII0+94)
-#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 : \
- EL_CHAR_A + (x) - 'A')
-
-#define EL_MAUER_X 200
-#define EL_MAUER_Y 201
-#define EL_MAUER_XY 202
-
-#define EL_EM_GATE_1 203
-#define EL_EM_GATE_2 204
-#define EL_EM_GATE_3 205
-#define EL_EM_GATE_4 206
-
-#define EL_EM_KEY_2_FILE 207
-#define EL_EM_KEY_3_FILE 208
-#define EL_EM_KEY_4_FILE 209
-
-#define EL_SP_START 210
-#define EL_SP_EMPTY (EL_SP_START + 0)
-#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 (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_BUG (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_GATE_1X 250
-#define EL_EM_GATE_2X 251
-#define EL_EM_GATE_3X 252
-#define EL_EM_GATE_4X 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_PASSIVE 263
-#define EL_EXTRA_TIME 264
-#define EL_SWITCHGATE_OPEN 265
-#define EL_SWITCHGATE_CLOSED 266
-#define EL_SWITCHGATE_SWITCH_1 267
-#define EL_SWITCHGATE_SWITCH_2 268
-
-#define EL_UNUSED_269 269
-#define EL_UNUSED_270 270
-
-#define EL_BELT1_LEFT 271
-#define EL_BELT1_MIDDLE 272
-#define EL_BELT1_RIGHT 273
-#define EL_BELT1_SWITCH_LEFT 274
-#define EL_BELT1_SWITCH_MIDDLE 275
-#define EL_BELT1_SWITCH_RIGHT 276
-#define EL_BELT2_LEFT 277
-#define EL_BELT2_MIDDLE 278
-#define EL_BELT2_RIGHT 279
-#define EL_BELT2_SWITCH_LEFT 280
-#define EL_BELT2_SWITCH_MIDDLE 281
-#define EL_BELT2_SWITCH_RIGHT 282
-#define EL_BELT3_LEFT 283
-#define EL_BELT3_MIDDLE 284
-#define EL_BELT3_RIGHT 285
-#define EL_BELT3_SWITCH_LEFT 286
-#define EL_BELT3_SWITCH_MIDDLE 287
-#define EL_BELT3_SWITCH_RIGHT 288
-#define EL_BELT4_LEFT 289
-#define EL_BELT4_MIDDLE 290
-#define EL_BELT4_RIGHT 291
-#define EL_BELT4_SWITCH_LEFT 292
-#define EL_BELT4_SWITCH_MIDDLE 293
-#define EL_BELT4_SWITCH_RIGHT 294
-#define EL_LANDMINE 295
-#define EL_ENVELOPE 296
-#define EL_LIGHT_SWITCH_OFF 297
-#define EL_LIGHT_SWITCH_ON 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_STEEL_SLANTED 315
-#define EL_SAND_INVISIBLE 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_ACTIVE 321
-#define EL_TIMEGATE_OPEN 322
-#define EL_TIMEGATE_CLOSED 323
-#define EL_TIMEGATE_SWITCH_ON 324
-#define EL_TIMEGATE_SWITCH_OFF 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 331
-
-#define EL_EMC_STEEL_WALL_1 332
-#define EL_EMC_STEEL_WALL_2 333
-#define EL_EMC_STEEL_WALL_3 334
-#define EL_EMC_STEEL_WALL_4 335
-#define EL_EMC_WALL_1 336
-#define EL_EMC_WALL_2 337
-#define EL_EMC_WALL_3 338
-#define EL_EMC_WALL_4 339
-#define EL_EMC_WALL_5 340
-#define EL_EMC_WALL_6 341
-#define EL_EMC_WALL_7 342
-#define EL_EMC_WALL_8 343
+/* "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