rnd-20070220-1-src
[rocksndiamonds.git] / src / editor.c
index 086fae012d247d5e6e121dd27e8cc18573b9a57e..0aec10894e1471f32089504e8226df566bef0294 100644 (file)
@@ -1,7 +1,7 @@
 /***********************************************************
 * Rocks'n'Diamonds -- McDuffin Strikes Back!               *
 *----------------------------------------------------------*
-* (c) 1995-2002 Artsoft Entertainment                      *
+* (c) 1995-2006 Artsoft Entertainment                      *
 *               Holger Schemel                             *
 *               Detmolder Strasse 189                      *
 *               33604 Bielefeld                            *
 #define GADGET_ID_CUSTOM_COPY          (GADGET_ID_TOOLBOX_FIRST + 25)
 #define GADGET_ID_CUSTOM_PASTE         (GADGET_ID_TOOLBOX_FIRST + 26)
 
-/* counter button identifiers */
+/* counter gadget identifiers */
 #define GADGET_ID_COUNTER_FIRST                (GADGET_ID_TOOLBOX_FIRST + 27)
 
 #define GADGET_ID_SELECT_LEVEL_DOWN    (GADGET_ID_COUNTER_FIRST + 0)
 #define GADGET_ID_RANDOM_PERCENTAGE    (GADGET_ID_CHECKBUTTON_FIRST + 0)
 #define GADGET_ID_RANDOM_QUANTITY      (GADGET_ID_CHECKBUTTON_FIRST + 1)
 #define GADGET_ID_RANDOM_RESTRICTED    (GADGET_ID_CHECKBUTTON_FIRST + 2)
-#define GADGET_ID_INITIAL_GRAVITY      (GADGET_ID_CHECKBUTTON_FIRST + 3)
-#define GADGET_ID_STICK_ELEMENT                (GADGET_ID_CHECKBUTTON_FIRST + 4)
-#define GADGET_ID_EM_SLIPPERY_GEMS     (GADGET_ID_CHECKBUTTON_FIRST + 5)
-#define GADGET_ID_USE_SPRING_BUG       (GADGET_ID_CHECKBUTTON_FIRST + 6)
-#define GADGET_ID_USE_TIME_ORB_BUG     (GADGET_ID_CHECKBUTTON_FIRST + 7)
-#define GADGET_ID_RANDOM_BALL_CONTENT  (GADGET_ID_CHECKBUTTON_FIRST + 8)
-#define GADGET_ID_INITIAL_BALL_STATE   (GADGET_ID_CHECKBUTTON_FIRST + 9)
-#define GADGET_ID_GROW_INTO_DIGGABLE   (GADGET_ID_CHECKBUTTON_FIRST + 10)
-#define GADGET_ID_CONTINUOUS_SNAPPING  (GADGET_ID_CHECKBUTTON_FIRST + 11)
-#define GADGET_ID_BLOCK_SNAP_FIELD     (GADGET_ID_CHECKBUTTON_FIRST + 12)
-#define GADGET_ID_BLOCK_LAST_FIELD     (GADGET_ID_CHECKBUTTON_FIRST + 13)
-#define GADGET_ID_SP_BLOCK_LAST_FIELD  (GADGET_ID_CHECKBUTTON_FIRST + 14)
-#define GADGET_ID_INSTANT_RELOCATION   (GADGET_ID_CHECKBUTTON_FIRST + 15)
-#define GADGET_ID_USE_START_ELEMENT    (GADGET_ID_CHECKBUTTON_FIRST + 16)
-#define GADGET_ID_USE_ARTWORK_ELEMENT  (GADGET_ID_CHECKBUTTON_FIRST + 17)
-#define GADGET_ID_USE_EXPLOSION_ELEMENT        (GADGET_ID_CHECKBUTTON_FIRST + 18)
+#define GADGET_ID_STICK_ELEMENT                (GADGET_ID_CHECKBUTTON_FIRST + 3)
+#define GADGET_ID_EM_SLIPPERY_GEMS     (GADGET_ID_CHECKBUTTON_FIRST + 4)
+#define GADGET_ID_USE_SPRING_BUG       (GADGET_ID_CHECKBUTTON_FIRST + 5)
+#define GADGET_ID_USE_TIME_ORB_BUG     (GADGET_ID_CHECKBUTTON_FIRST + 6)
+#define GADGET_ID_RANDOM_BALL_CONTENT  (GADGET_ID_CHECKBUTTON_FIRST + 7)
+#define GADGET_ID_INITIAL_BALL_STATE   (GADGET_ID_CHECKBUTTON_FIRST + 8)
+#define GADGET_ID_GROW_INTO_DIGGABLE   (GADGET_ID_CHECKBUTTON_FIRST + 9)
+#define GADGET_ID_CONTINUOUS_SNAPPING  (GADGET_ID_CHECKBUTTON_FIRST + 10)
+#define GADGET_ID_BLOCK_SNAP_FIELD     (GADGET_ID_CHECKBUTTON_FIRST + 11)
+#define GADGET_ID_BLOCK_LAST_FIELD     (GADGET_ID_CHECKBUTTON_FIRST + 12)
+#define GADGET_ID_SP_BLOCK_LAST_FIELD  (GADGET_ID_CHECKBUTTON_FIRST + 13)
+#define GADGET_ID_INSTANT_RELOCATION   (GADGET_ID_CHECKBUTTON_FIRST + 14)
+#define GADGET_ID_USE_START_ELEMENT    (GADGET_ID_CHECKBUTTON_FIRST + 15)
+#define GADGET_ID_USE_ARTWORK_ELEMENT  (GADGET_ID_CHECKBUTTON_FIRST + 16)
+#define GADGET_ID_USE_EXPLOSION_ELEMENT        (GADGET_ID_CHECKBUTTON_FIRST + 17)
+#define GADGET_ID_INITIAL_GRAVITY      (GADGET_ID_CHECKBUTTON_FIRST + 18)
 #define GADGET_ID_CAN_PASS_TO_WALKABLE (GADGET_ID_CHECKBUTTON_FIRST + 19)
 #define GADGET_ID_CAN_FALL_INTO_ACID   (GADGET_ID_CHECKBUTTON_FIRST + 20)
 #define GADGET_ID_CAN_MOVE_INTO_ACID   (GADGET_ID_CHECKBUTTON_FIRST + 21)
 #define GADGET_ID_DONT_COLLIDE_WITH    (GADGET_ID_CHECKBUTTON_FIRST + 22)
-#define GADGET_ID_CUSTOM_INDESTRUCTIBLE        (GADGET_ID_CHECKBUTTON_FIRST + 23)
-#define GADGET_ID_CUSTOM_CAN_EXPLODE   (GADGET_ID_CHECKBUTTON_FIRST + 24)
-#define GADGET_ID_CUSTOM_EXPLODE_FIRE  (GADGET_ID_CHECKBUTTON_FIRST + 25)
-#define GADGET_ID_CUSTOM_EXPLODE_SMASH (GADGET_ID_CHECKBUTTON_FIRST + 26)
-#define GADGET_ID_CUSTOM_EXPLODE_IMPACT        (GADGET_ID_CHECKBUTTON_FIRST + 27)
-#define GADGET_ID_CUSTOM_WALK_TO_OBJECT        (GADGET_ID_CHECKBUTTON_FIRST + 28)
-#define GADGET_ID_CUSTOM_DEADLY                (GADGET_ID_CHECKBUTTON_FIRST + 29)
-#define GADGET_ID_CUSTOM_CAN_MOVE      (GADGET_ID_CHECKBUTTON_FIRST + 30)
-#define GADGET_ID_CUSTOM_CAN_FALL      (GADGET_ID_CHECKBUTTON_FIRST + 31)
-#define GADGET_ID_CUSTOM_CAN_SMASH     (GADGET_ID_CHECKBUTTON_FIRST + 32)
-#define GADGET_ID_CUSTOM_SLIPPERY      (GADGET_ID_CHECKBUTTON_FIRST + 33)
-#define GADGET_ID_CUSTOM_ACCESSIBLE    (GADGET_ID_CHECKBUTTON_FIRST + 34)
-#define GADGET_ID_CUSTOM_GRAV_REACHABLE        (GADGET_ID_CHECKBUTTON_FIRST + 35)
-#define GADGET_ID_CUSTOM_USE_LAST_VALUE        (GADGET_ID_CHECKBUTTON_FIRST + 36)
-#define GADGET_ID_CUSTOM_USE_GRAPHIC   (GADGET_ID_CHECKBUTTON_FIRST + 37)
-#define GADGET_ID_CUSTOM_USE_TEMPLATE  (GADGET_ID_CHECKBUTTON_FIRST + 38)
-#define GADGET_ID_CUSTOM_CAN_CHANGE    (GADGET_ID_CHECKBUTTON_FIRST + 39)
-#define GADGET_ID_CHANGE_USE_CONTENT   (GADGET_ID_CHECKBUTTON_FIRST + 40)
-#define GADGET_ID_CHANGE_USE_EXPLOSION (GADGET_ID_CHECKBUTTON_FIRST + 41)
-#define GADGET_ID_CHANGE_ONLY_COMPLETE (GADGET_ID_CHECKBUTTON_FIRST + 42)
-#define GADGET_ID_CHANGE_USE_RANDOM    (GADGET_ID_CHECKBUTTON_FIRST + 43)
-#define GADGET_ID_CHANGE_HAS_ACTION    (GADGET_ID_CHECKBUTTON_FIRST + 44)
-#define GADGET_ID_CHANGE_DELAY         (GADGET_ID_CHECKBUTTON_FIRST + 45)
-#define GADGET_ID_CHANGE_BY_DIRECT_ACT (GADGET_ID_CHECKBUTTON_FIRST + 46)
-#define GADGET_ID_CHANGE_BY_OTHER_ACT  (GADGET_ID_CHECKBUTTON_FIRST + 47)
+#define GADGET_ID_ENVELOPE_AUTOWRAP    (GADGET_ID_CHECKBUTTON_FIRST + 23)
+#define GADGET_ID_ENVELOPE_CENTERED    (GADGET_ID_CHECKBUTTON_FIRST + 24)
+#define GADGET_ID_CUSTOM_INDESTRUCTIBLE        (GADGET_ID_CHECKBUTTON_FIRST + 25)
+#define GADGET_ID_CUSTOM_CAN_EXPLODE   (GADGET_ID_CHECKBUTTON_FIRST + 26)
+#define GADGET_ID_CUSTOM_EXPLODE_FIRE  (GADGET_ID_CHECKBUTTON_FIRST + 27)
+#define GADGET_ID_CUSTOM_EXPLODE_SMASH (GADGET_ID_CHECKBUTTON_FIRST + 28)
+#define GADGET_ID_CUSTOM_EXPLODE_IMPACT        (GADGET_ID_CHECKBUTTON_FIRST + 29)
+#define GADGET_ID_CUSTOM_WALK_TO_OBJECT        (GADGET_ID_CHECKBUTTON_FIRST + 30)
+#define GADGET_ID_CUSTOM_DEADLY                (GADGET_ID_CHECKBUTTON_FIRST + 31)
+#define GADGET_ID_CUSTOM_CAN_MOVE      (GADGET_ID_CHECKBUTTON_FIRST + 32)
+#define GADGET_ID_CUSTOM_CAN_FALL      (GADGET_ID_CHECKBUTTON_FIRST + 33)
+#define GADGET_ID_CUSTOM_CAN_SMASH     (GADGET_ID_CHECKBUTTON_FIRST + 34)
+#define GADGET_ID_CUSTOM_SLIPPERY      (GADGET_ID_CHECKBUTTON_FIRST + 35)
+#define GADGET_ID_CUSTOM_ACCESSIBLE    (GADGET_ID_CHECKBUTTON_FIRST + 36)
+#define GADGET_ID_CUSTOM_GRAV_REACHABLE        (GADGET_ID_CHECKBUTTON_FIRST + 37)
+#define GADGET_ID_CUSTOM_USE_LAST_VALUE        (GADGET_ID_CHECKBUTTON_FIRST + 38)
+#define GADGET_ID_CUSTOM_USE_GRAPHIC   (GADGET_ID_CHECKBUTTON_FIRST + 39)
+#define GADGET_ID_CUSTOM_USE_TEMPLATE  (GADGET_ID_CHECKBUTTON_FIRST + 40)
+#define GADGET_ID_CUSTOM_CAN_CHANGE    (GADGET_ID_CHECKBUTTON_FIRST + 41)
+#define GADGET_ID_CHANGE_USE_CONTENT   (GADGET_ID_CHECKBUTTON_FIRST + 42)
+#define GADGET_ID_CHANGE_USE_EXPLOSION (GADGET_ID_CHECKBUTTON_FIRST + 43)
+#define GADGET_ID_CHANGE_ONLY_COMPLETE (GADGET_ID_CHECKBUTTON_FIRST + 44)
+#define GADGET_ID_CHANGE_USE_RANDOM    (GADGET_ID_CHECKBUTTON_FIRST + 45)
+#define GADGET_ID_CHANGE_HAS_ACTION    (GADGET_ID_CHECKBUTTON_FIRST + 46)
+#define GADGET_ID_CHANGE_DELAY         (GADGET_ID_CHECKBUTTON_FIRST + 47)
+#define GADGET_ID_CHANGE_BY_DIRECT_ACT (GADGET_ID_CHECKBUTTON_FIRST + 48)
+#define GADGET_ID_CHANGE_BY_OTHER_ACT  (GADGET_ID_CHECKBUTTON_FIRST + 49)
 
 /* gadgets for buttons in element list */
-#define GADGET_ID_ELEMENTLIST_FIRST    (GADGET_ID_CHECKBUTTON_FIRST + 48)
+#define GADGET_ID_ELEMENTLIST_FIRST    (GADGET_ID_CHECKBUTTON_FIRST + 50)
 #define GADGET_ID_ELEMENTLIST_LAST     (GADGET_ID_ELEMENTLIST_FIRST +  \
                                        ED_NUM_ELEMENTLIST_BUTTONS - 1)
 
 #define ED_GRAPHICBUTTON_ID_CHANGE_LAST   ED_GRAPHICBUTTON_ID_PASTE_CHANGE_PAGE
 
 /* values for checkbutton gadgets */
-#define ED_CHECKBUTTON_ID_INITIAL_GRAVITY      0
-#define ED_CHECKBUTTON_ID_RANDOM_RESTRICTED    1
-#define ED_CHECKBUTTON_ID_STICK_ELEMENT                2
-#define ED_CHECKBUTTON_ID_EM_SLIPPERY_GEMS     3
-#define ED_CHECKBUTTON_ID_USE_SPRING_BUG       4
-#define ED_CHECKBUTTON_ID_USE_TIME_ORB_BUG     5
-#define ED_CHECKBUTTON_ID_RANDOM_BALL_CONTENT  6
-#define ED_CHECKBUTTON_ID_INITIAL_BALL_STATE   7
-#define ED_CHECKBUTTON_ID_GROW_INTO_DIGGABLE   8
-#define ED_CHECKBUTTON_ID_CONTINUOUS_SNAPPING  9
-#define ED_CHECKBUTTON_ID_BLOCK_SNAP_FIELD     10
-#define ED_CHECKBUTTON_ID_BLOCK_LAST_FIELD     11
-#define ED_CHECKBUTTON_ID_SP_BLOCK_LAST_FIELD  12
-#define ED_CHECKBUTTON_ID_INSTANT_RELOCATION   13
-#define ED_CHECKBUTTON_ID_USE_START_ELEMENT    14
-#define ED_CHECKBUTTON_ID_USE_ARTWORK_ELEMENT  15
-#define ED_CHECKBUTTON_ID_USE_EXPLOSION_ELEMENT        16
+#define ED_CHECKBUTTON_ID_RANDOM_RESTRICTED    0
+#define ED_CHECKBUTTON_ID_STICK_ELEMENT                1
+#define ED_CHECKBUTTON_ID_EM_SLIPPERY_GEMS     2
+#define ED_CHECKBUTTON_ID_USE_SPRING_BUG       3
+#define ED_CHECKBUTTON_ID_USE_TIME_ORB_BUG     4
+#define ED_CHECKBUTTON_ID_RANDOM_BALL_CONTENT  5
+#define ED_CHECKBUTTON_ID_INITIAL_BALL_STATE   6
+#define ED_CHECKBUTTON_ID_GROW_INTO_DIGGABLE   7
+#define ED_CHECKBUTTON_ID_CONTINUOUS_SNAPPING  8
+#define ED_CHECKBUTTON_ID_BLOCK_SNAP_FIELD     9
+#define ED_CHECKBUTTON_ID_BLOCK_LAST_FIELD     10
+#define ED_CHECKBUTTON_ID_SP_BLOCK_LAST_FIELD  11
+#define ED_CHECKBUTTON_ID_INSTANT_RELOCATION   12
+#define ED_CHECKBUTTON_ID_USE_START_ELEMENT    13
+#define ED_CHECKBUTTON_ID_USE_ARTWORK_ELEMENT  14
+#define ED_CHECKBUTTON_ID_USE_EXPLOSION_ELEMENT        15
+#define ED_CHECKBUTTON_ID_INITIAL_GRAVITY      16
 #define ED_CHECKBUTTON_ID_CAN_PASS_TO_WALKABLE 17
 #define ED_CHECKBUTTON_ID_CAN_FALL_INTO_ACID   18
 #define ED_CHECKBUTTON_ID_CAN_MOVE_INTO_ACID   19
 #define ED_CHECKBUTTON_ID_DONT_COLLIDE_WITH    20
-#define ED_CHECKBUTTON_ID_CUSTOM_USE_GRAPHIC   21
-#define ED_CHECKBUTTON_ID_CUSTOM_USE_TEMPLATE  22
-#define ED_CHECKBUTTON_ID_CUSTOM_ACCESSIBLE    23
-#define ED_CHECKBUTTON_ID_CUSTOM_GRAV_REACHABLE        24
-#define ED_CHECKBUTTON_ID_CUSTOM_USE_LAST_VALUE        25
-#define ED_CHECKBUTTON_ID_CUSTOM_WALK_TO_OBJECT        26
-#define ED_CHECKBUTTON_ID_CUSTOM_INDESTRUCTIBLE        27
-#define ED_CHECKBUTTON_ID_CUSTOM_CAN_MOVE      28
-#define ED_CHECKBUTTON_ID_CUSTOM_CAN_FALL      29
-#define ED_CHECKBUTTON_ID_CUSTOM_CAN_SMASH     30
-#define ED_CHECKBUTTON_ID_CUSTOM_SLIPPERY      31
-#define ED_CHECKBUTTON_ID_CUSTOM_DEADLY                32
-#define ED_CHECKBUTTON_ID_CUSTOM_CAN_EXPLODE   33
-#define ED_CHECKBUTTON_ID_CUSTOM_EXPLODE_FIRE  34
-#define ED_CHECKBUTTON_ID_CUSTOM_EXPLODE_SMASH 35
-#define ED_CHECKBUTTON_ID_CUSTOM_EXPLODE_IMPACT        36
-#define ED_CHECKBUTTON_ID_CUSTOM_CAN_CHANGE    37
-#define ED_CHECKBUTTON_ID_CHANGE_DELAY         38
-#define ED_CHECKBUTTON_ID_CHANGE_BY_DIRECT_ACT 39
-#define ED_CHECKBUTTON_ID_CHANGE_BY_OTHER_ACT  40
-#define ED_CHECKBUTTON_ID_CHANGE_USE_EXPLOSION 41
-#define ED_CHECKBUTTON_ID_CHANGE_USE_CONTENT   42
-#define ED_CHECKBUTTON_ID_CHANGE_ONLY_COMPLETE 43
-#define ED_CHECKBUTTON_ID_CHANGE_USE_RANDOM    44
-#define ED_CHECKBUTTON_ID_CHANGE_HAS_ACTION    45
-
-#define ED_NUM_CHECKBUTTONS                    46
-
-#define ED_CHECKBUTTON_ID_LEVEL_FIRST  ED_CHECKBUTTON_ID_INITIAL_GRAVITY
+#define ED_CHECKBUTTON_ID_ENVELOPE_AUTOWRAP    21
+#define ED_CHECKBUTTON_ID_ENVELOPE_CENTERED    22
+#define ED_CHECKBUTTON_ID_CUSTOM_USE_GRAPHIC   23
+#define ED_CHECKBUTTON_ID_CUSTOM_USE_TEMPLATE  24
+#define ED_CHECKBUTTON_ID_CUSTOM_ACCESSIBLE    25
+#define ED_CHECKBUTTON_ID_CUSTOM_GRAV_REACHABLE        26
+#define ED_CHECKBUTTON_ID_CUSTOM_USE_LAST_VALUE        27
+#define ED_CHECKBUTTON_ID_CUSTOM_WALK_TO_OBJECT        28
+#define ED_CHECKBUTTON_ID_CUSTOM_INDESTRUCTIBLE        29
+#define ED_CHECKBUTTON_ID_CUSTOM_CAN_MOVE      30
+#define ED_CHECKBUTTON_ID_CUSTOM_CAN_FALL      31
+#define ED_CHECKBUTTON_ID_CUSTOM_CAN_SMASH     32
+#define ED_CHECKBUTTON_ID_CUSTOM_SLIPPERY      33
+#define ED_CHECKBUTTON_ID_CUSTOM_DEADLY                34
+#define ED_CHECKBUTTON_ID_CUSTOM_CAN_EXPLODE   35
+#define ED_CHECKBUTTON_ID_CUSTOM_EXPLODE_FIRE  36
+#define ED_CHECKBUTTON_ID_CUSTOM_EXPLODE_SMASH 37
+#define ED_CHECKBUTTON_ID_CUSTOM_EXPLODE_IMPACT        38
+#define ED_CHECKBUTTON_ID_CUSTOM_CAN_CHANGE    39
+#define ED_CHECKBUTTON_ID_CHANGE_DELAY         40
+#define ED_CHECKBUTTON_ID_CHANGE_BY_DIRECT_ACT 41
+#define ED_CHECKBUTTON_ID_CHANGE_BY_OTHER_ACT  42
+#define ED_CHECKBUTTON_ID_CHANGE_USE_EXPLOSION 43
+#define ED_CHECKBUTTON_ID_CHANGE_USE_CONTENT   44
+#define ED_CHECKBUTTON_ID_CHANGE_ONLY_COMPLETE 45
+#define ED_CHECKBUTTON_ID_CHANGE_USE_RANDOM    46
+#define ED_CHECKBUTTON_ID_CHANGE_HAS_ACTION    47
+
+#define ED_NUM_CHECKBUTTONS                    48
+
+#define ED_CHECKBUTTON_ID_LEVEL_FIRST  ED_CHECKBUTTON_ID_RANDOM_RESTRICTED
 #define ED_CHECKBUTTON_ID_LEVEL_LAST   ED_CHECKBUTTON_ID_RANDOM_RESTRICTED
 
 #define ED_CHECKBUTTON_ID_CUSTOM1_FIRST        ED_CHECKBUTTON_ID_CUSTOM_USE_GRAPHIC
@@ -1026,7 +1030,7 @@ static struct
     NULL,                              " ", "height",
   },
   {
-    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(6),
+    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(5),
     0,                                 999,
     GADGET_ID_LEVEL_GEMSLIMIT_DOWN,    GADGET_ID_LEVEL_GEMSLIMIT_UP,
     GADGET_ID_LEVEL_GEMSLIMIT_TEXT,    GADGET_ID_NONE,
@@ -1034,7 +1038,7 @@ static struct
     NULL, "number of gems to collect:",        NULL
   },
   {
-    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(8),
+    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(7),
     0,                                 9999,
     GADGET_ID_LEVEL_TIMELIMIT_DOWN,    GADGET_ID_LEVEL_TIMELIMIT_UP,
     GADGET_ID_LEVEL_TIMELIMIT_TEXT,    GADGET_ID_NONE,
@@ -1042,7 +1046,7 @@ static struct
     "time or step limit to solve level:", NULL, NULL
   },
   {
-    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(10),
+    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(9),
     0,                                 255,
     GADGET_ID_LEVEL_TIMESCORE_DOWN,    GADGET_ID_LEVEL_TIMESCORE_UP,
     GADGET_ID_LEVEL_TIMESCORE_TEXT,    GADGET_ID_NONE,
@@ -1121,7 +1125,7 @@ static struct
     MIN_ENVELOPE_XSIZE,                        MAX_ENVELOPE_XSIZE,
     GADGET_ID_ENVELOPE_XSIZE_DOWN,     GADGET_ID_ENVELOPE_XSIZE_UP,
     GADGET_ID_ENVELOPE_XSIZE_TEXT,     GADGET_ID_NONE,
-    NULL,
+    NULL,                              /* will be set when used */
     NULL,                              NULL, "width",
   },
   {
@@ -1129,7 +1133,7 @@ static struct
     MIN_ENVELOPE_YSIZE,                        MAX_ENVELOPE_YSIZE,
     GADGET_ID_ENVELOPE_YSIZE_DOWN,     GADGET_ID_ENVELOPE_YSIZE_UP,
     GADGET_ID_ENVELOPE_YSIZE_TEXT,     GADGET_ID_ENVELOPE_XSIZE_UP,
-    NULL,
+    NULL,                              /* will be set when used */
     NULL,                              " ", "height",
   },
 
@@ -1316,11 +1320,11 @@ static struct
 } textarea_info[ED_NUM_TEXTAREAS] =
 {
   {
-    ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(2),
+    ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(3),
     GADGET_ID_ENVELOPE_INFO,
     MAX_ENVELOPE_XSIZE, MAX_ENVELOPE_YSIZE,
     NULL,
-    "Envelope Info:", "Envelope Info"
+    "Envelope Content:", "Envelope Content"
   }
 };
 
@@ -1549,7 +1553,12 @@ static struct ValueTextInfo options_change_direct_action[] =
 #endif
   { CE_IMPACT,                 "impact (on something)"         },
   { CE_SMASHED,                        "smashed (from above)"          },
+#if 0
+  { CE_VALUE_CHANGES,          "CE value changes"              },
+  { CE_SCORE_CHANGES,          "CE score changes"              },
+#endif
   { CE_VALUE_GETS_ZERO,                "CE value gets 0"               },
+  { CE_SCORE_GETS_ZERO,                "CE score gets 0"               },
 
   { -1,                                NULL                            }
 };
@@ -1575,7 +1584,10 @@ static struct ValueTextInfo options_change_other_action[] =
   { CE_EXPLOSION_OF_X,         "explosion of"                  },
   { CE_MOVE_OF_X,              "move of"                       },
   { CE_CREATION_OF_X,          "creation of"                   },
+  { CE_VALUE_CHANGES_OF_X,     "CE value changes of"           },
+  { CE_SCORE_CHANGES_OF_X,     "CE score changes of"           },
   { CE_VALUE_GETS_ZERO_OF_X,   "CE value gets 0 of"            },
+  { CE_SCORE_GETS_ZERO_OF_X,   "CE score gets 0 of"            },
 
   { -1,                                NULL                            }
 };
@@ -1665,7 +1677,6 @@ static struct ValueTextInfo options_action_type[] =
   { CA_SET_LEVEL_TIME,         "set time"                      },
   { CA_SET_LEVEL_SCORE,                "set score"                     },
   { CA_SET_LEVEL_GEMS,         "set needed gems"               },
-  { CA_SET_LEVEL_GRAVITY,      "set gravity"                   },
   { CA_SET_LEVEL_WIND,         "set wind dir."                 },
   { CA_UNDEFINED,              " "                             },
   { CA_HEADLINE_PLAYER_ACTIONS,        "[player actions]"              },
@@ -1675,11 +1686,12 @@ static struct ValueTextInfo options_action_type[] =
   { CA_SET_PLAYER_KEYS,                "set keys"                      },
   { CA_SET_PLAYER_SPEED,       "set speed"                     },
   { CA_SET_PLAYER_SHIELD,      "set shield"                    },
+  { CA_SET_PLAYER_GRAVITY,     "set gravity"                   },
   { CA_SET_PLAYER_ARTWORK,     "set artwork"                   },
   { CA_UNDEFINED,              " "                             },
   { CA_HEADLINE_CE_ACTIONS,    "[CE actions]"                  },
-  { CA_SET_CE_SCORE,           "set CE score"                  },
   { CA_SET_CE_VALUE,           "set CE value"                  },
+  { CA_SET_CE_SCORE,           "set CE score"                  },
   { CA_UNDEFINED,              " "                             },
   { CA_HEADLINE_ENGINE_ACTIONS,        "[engine actions]"              },
   { CA_SET_ENGINE_SCAN_MODE,   "set scan mode"                 },
@@ -1689,7 +1701,7 @@ static struct ValueTextInfo options_action_type[] =
 
 static struct ValueTextInfo options_action_mode_none[] =
 {
-  { CA_ARG_UNDEFINED,          " "                             },
+  { CA_MODE_UNDEFINED,         " "                             },
 
   { -1,                                NULL                            }
 };
@@ -1759,19 +1771,21 @@ static struct ValueTextInfo options_action_arg_number[] =
   { CA_ARG_UNDEFINED,          " "                             },
   { CA_ARG_NUMBER_RESET,       "reset"                         },
   { CA_ARG_UNDEFINED,          " "                             },
-  { CA_ARG_NUMBER_CE_DELAY,    "CE delay"                      },
-  { CA_ARG_NUMBER_CE_SCORE,    "CE score"                      },
   { CA_ARG_NUMBER_CE_VALUE,    "CE value"                      },
+  { CA_ARG_NUMBER_CE_SCORE,    "CE score"                      },
+  { CA_ARG_NUMBER_CE_DELAY,    "CE delay"                      },
   { CA_ARG_UNDEFINED,          " "                             },
   { CA_ARG_NUMBER_LEVEL_TIME,  "time"                          },
   { CA_ARG_NUMBER_LEVEL_GEMS,  "gems"                          },
   { CA_ARG_NUMBER_LEVEL_SCORE, "score"                         },
   { CA_ARG_UNDEFINED,          " "                             },
-  { CA_ARG_ELEMENT_CV_HEADLINE,        "[CE value"                     },
-  { CA_ARG_ELEMENT_CV_HEADLINE,        " of"                           },
-  { CA_ARG_ELEMENT_CV_HEADLINE,        " element]"                     },
+  { CA_ARG_ELEMENT_CV_HEADLINE,        "[CE value]"                    },
   { CA_ARG_ELEMENT_CV_TARGET,  "target"                        },
   { CA_ARG_ELEMENT_CV_TRIGGER, "trigger"                       },
+  { CA_ARG_UNDEFINED,          " "                             },
+  { CA_ARG_ELEMENT_CS_HEADLINE,        "[CE score]"                    },
+  { CA_ARG_ELEMENT_CS_TARGET,  "target"                        },
+  { CA_ARG_ELEMENT_CS_TRIGGER, "trigger"                       },
 
   { -1,                                NULL                            }
 };
@@ -1794,20 +1808,22 @@ static struct ValueTextInfo options_action_arg_value[] =
   { CA_ARG_UNDEFINED,          " "                             },
   { CA_ARG_NUMBER_RESET,       "reset"                         },
   { CA_ARG_UNDEFINED,          " "                             },
-  { CA_ARG_NUMBER_CE_DELAY,    "CE delay"                      },
-  { CA_ARG_NUMBER_CE_SCORE,    "CE score"                      },
   { CA_ARG_NUMBER_CE_VALUE,    "CE value"                      },
+  { CA_ARG_NUMBER_CE_SCORE,    "CE score"                      },
+  { CA_ARG_NUMBER_CE_DELAY,    "CE delay"                      },
   { CA_ARG_UNDEFINED,          " "                             },
   { CA_ARG_NUMBER_LEVEL_TIME,  "time"                          },
   { CA_ARG_NUMBER_LEVEL_GEMS,  "gems"                          },
   { CA_ARG_NUMBER_LEVEL_SCORE, "score"                         },
   { CA_ARG_UNDEFINED,          " "                             },
-  { CA_ARG_ELEMENT_CV_HEADLINE,        "[CE value"                     },
-  { CA_ARG_ELEMENT_CV_HEADLINE,        " of"                           },
-  { CA_ARG_ELEMENT_CV_HEADLINE,        " element]"                     },
+  { CA_ARG_ELEMENT_CV_HEADLINE,        "[CE value]"                    },
   { CA_ARG_ELEMENT_CV_TARGET,  "target"                        },
   { CA_ARG_ELEMENT_CV_TRIGGER, "trigger"                       },
   { CA_ARG_UNDEFINED,          " "                             },
+  { CA_ARG_ELEMENT_CS_HEADLINE,        "[CE score]"                    },
+  { CA_ARG_ELEMENT_CS_TARGET,  "target"                        },
+  { CA_ARG_ELEMENT_CS_TRIGGER, "trigger"                       },
+  { CA_ARG_UNDEFINED,          " "                             },
   { CA_ARG_ELEMENT_NR_HEADLINE,        "[element]"                     },
   { CA_ARG_ELEMENT_NR_TARGET,  "target"                        },
   { CA_ARG_ELEMENT_NR_TRIGGER, "trigger"                       },
@@ -1964,14 +1980,14 @@ action_arg_options[] =
   { CA_SET_LEVEL_TIME,         3,      options_action_arg_number,      },
   { CA_SET_LEVEL_GEMS,         3,      options_action_arg_number,      },
   { CA_SET_LEVEL_SCORE,                3,      options_action_arg_number,      },
-  { CA_SET_LEVEL_GRAVITY,      1,      options_action_arg_gravity,     },
   { CA_SET_LEVEL_WIND,         1,      options_action_arg_direction,   },
   { CA_SET_PLAYER_KEYS,                2,      options_action_arg_key,         },
   { CA_SET_PLAYER_SPEED,       1,      options_action_arg_speed,       },
   { CA_SET_PLAYER_SHIELD,      1,      options_action_arg_shield,      },
+  { CA_SET_PLAYER_GRAVITY,     1,      options_action_arg_gravity,     },
   { CA_SET_PLAYER_ARTWORK,     1,      options_action_arg_artwork,     },
-  { CA_SET_CE_SCORE,           3,      options_action_arg_value,       },
   { CA_SET_CE_VALUE,           3,      options_action_arg_value,       },
+  { CA_SET_CE_SCORE,           3,      options_action_arg_value,       },
   { CA_SET_ENGINE_SCAN_MODE,   1,      options_action_arg_scan_mode,   },
 
   { -1,                                FALSE,  NULL                            }
@@ -1991,7 +2007,7 @@ static struct
   /* ---------- level and editor settings ---------------------------------- */
 
   {
-    -1,                                        ED_LEVEL_SETTINGS_YPOS(8),
+    -1,                                        ED_LEVEL_SETTINGS_YPOS(7),
     GADGET_ID_TIME_OR_STEPS,           GADGET_ID_LEVEL_TIMELIMIT_UP,
     -1,
     options_time_or_steps,
@@ -1999,7 +2015,7 @@ static struct
     NULL, "(0 => no limit)",           "time or step limit"
   },
   {
-    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(5),
+    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(11),
     GADGET_ID_GAME_ENGINE_TYPE,                GADGET_ID_NONE,
     -1,
     options_game_engine_type,
@@ -2007,7 +2023,7 @@ static struct
     "game engine:", NULL,              "game engine"
   },
   {
-    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(12),
+    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(10),
     GADGET_ID_WIND_DIRECTION,          GADGET_ID_NONE,
     -1,
     options_wind_direction,
@@ -2022,7 +2038,7 @@ static struct
     GADGET_ID_PLAYER_SPEED,            GADGET_ID_NONE,
     -1,
     options_player_speed,
-    &level.initial_player_stepsize,
+    &level.initial_player_stepsize[0],
     "initial player speed:", NULL,     "initial player speed"
   },
 
@@ -2390,6 +2406,8 @@ static struct
   int gd_x, gd_y;
   int x, y;
   int width, height;
+  int wheel_x, wheel_y;
+  int wheel_width, wheel_height;
   int type;
   int gadget_id;
   char *infotext;
@@ -2399,6 +2417,13 @@ static struct
     ED_SCROLLBAR_XPOS,                 ED_SCROLLBAR_YPOS,
     SX + ED_SCROLL_HORIZONTAL_XPOS,    SY + ED_SCROLL_HORIZONTAL_YPOS,
     ED_SCROLL_HORIZONTAL_XSIZE,                ED_SCROLL_HORIZONTAL_YSIZE,
+#if 1
+    SX,                                        SY,
+    SXSIZE,                            SYSIZE,
+#else
+    0,                                 0,
+    SX + SXSIZE + SX,                  WIN_YSIZE,
+#endif
     GD_TYPE_SCROLLBAR_HORIZONTAL,
     GADGET_ID_SCROLL_HORIZONTAL,
     "scroll level editing area horizontally"
@@ -2407,6 +2432,13 @@ static struct
     ED_SCROLLBAR_XPOS,                 ED_SCROLLBAR_YPOS,
     SX + ED_SCROLL_VERTICAL_XPOS,      SY + ED_SCROLL_VERTICAL_YPOS,
     ED_SCROLL_VERTICAL_XSIZE,          ED_SCROLL_VERTICAL_YSIZE,
+#if 1
+    SX,                                        SY,
+    SXSIZE,                            SYSIZE,
+#else
+    0,                                 0,
+    SX + SXSIZE + SX,                  WIN_YSIZE,
+#endif
     GD_TYPE_SCROLLBAR_VERTICAL,
     GADGET_ID_SCROLL_VERTICAL,
     "scroll level editing area vertically"
@@ -2415,6 +2447,13 @@ static struct
     ED_SCROLLBAR2_XPOS,                        ED_SCROLLBAR2_YPOS,
     DX + ED_SCROLL2_VERTICAL_XPOS,     DY + ED_SCROLL2_VERTICAL_YPOS,
     ED_SCROLL2_VERTICAL_XSIZE,         ED_SCROLL2_VERTICAL_YSIZE,
+#if 1
+    DX,                                        DY,
+    DXSIZE,                            DYSIZE,
+#else
+    SX + SXSIZE + SX,                  0,
+    WIN_XSIZE - (SX + SXSIZE + SX),    WIN_YSIZE,
+#endif
     GD_TYPE_SCROLLBAR_VERTICAL,
     GADGET_ID_SCROLL_LIST_VERTICAL,
     "scroll element list vertically"
@@ -2459,13 +2498,6 @@ static struct
 {
   /* ---------- level and editor settings ---------------------------------- */
 
-  {
-    ED_LEVEL_SETTINGS_XPOS(0),         ED_LEVEL_SETTINGS_YPOS(11),
-    GADGET_ID_INITIAL_GRAVITY,         GADGET_ID_NONE,
-    &level.initial_gravity,
-    NULL,
-    "initial gravity",                 "set initial level gravity"
-  },
   {
     ED_LEVEL_SETTINGS_XPOS(0),         ED_COUNTER2_YPOS(9) - MINI_TILEY,
     GADGET_ID_RANDOM_RESTRICTED,       GADGET_ID_NONE,
@@ -2488,7 +2520,7 @@ static struct
     GADGET_ID_EM_SLIPPERY_GEMS,                GADGET_ID_NONE,
     &level.em_slippery_gems,
     NULL,
-    "slip down from certain flat walls","use EM style slipping behaviour"
+    "slip down from certain flat walls","use EM/DC style slipping behaviour"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(2),
@@ -2581,6 +2613,13 @@ static struct
     NULL,
     "use explosion from element:",     "use explosion properties from element"
   },
+  {
+    ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(11),
+    GADGET_ID_INITIAL_GRAVITY,         GADGET_ID_NONE,
+    &level.initial_player_gravity[0],
+    NULL,
+    "use initial gravity",             "set initial player gravity"
+  },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(4),
     GADGET_ID_CAN_PASS_TO_WALKABLE,    GADGET_ID_NONE,
@@ -2609,6 +2648,20 @@ static struct
     NULL,
     "deadly when colliding with",      "element is deadly when hitting player"
   },
+  {
+    ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(1),
+    GADGET_ID_ENVELOPE_AUTOWRAP,       GADGET_ID_NONE,
+    &level.envelope[0].autowrap,
+    NULL,
+    "auto-wrap",                       "automatically wrap envelope text"
+  },
+  {
+    -1,                                        ED_ELEMENT_SETTINGS_YPOS(1),
+    GADGET_ID_ENVELOPE_CENTERED,       GADGET_ID_ENVELOPE_AUTOWRAP,
+    &level.envelope[0].centered,
+    " ",
+    "centered",                                "automatically center envelope text"
+  },
 
   /* ---------- element settings: configure 1 (custom elements) ----------- */
 
@@ -2619,46 +2672,54 @@ static struct
 
     /* !!! add separate "use existing element sound" !!! */
 #if 0
-    NULL, "use graphic/sound of element:", "use existing graphic and sound"
+    NULL,
+    "use graphic/sound of element:",   "use existing graphic and sound"
 #else
-    NULL, "use graphic of element:",   "use existing element graphic"
+    NULL,
+    "use graphic of element:",         "use existing element graphic"
 #endif
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(2),
     GADGET_ID_CUSTOM_USE_TEMPLATE,     GADGET_ID_NONE,
     &level.use_custom_template,
-    NULL, "use template",              "use template for custom properties"
+    NULL,
+    "use template",                    "use template for custom properties"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(3),
     GADGET_ID_CUSTOM_ACCESSIBLE,       GADGET_ID_NONE,
     &custom_element_properties[EP_ACCESSIBLE],
-    NULL, NULL,                                "player can walk to or pass this field"
+    NULL,
+    NULL,                              "player can walk to or pass this field"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(10),
     GADGET_ID_CUSTOM_GRAV_REACHABLE,   GADGET_ID_NONE,
     &custom_element_properties[EP_GRAVITY_REACHABLE],
-    NULL, "reachable despite gravity", "player can walk/dig despite gravity"
+    NULL,
+    "reachable despite gravity",       "player can walk/dig despite gravity"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(13),
     GADGET_ID_CUSTOM_USE_LAST_VALUE,   GADGET_ID_NONE,
     &custom_element.use_last_ce_value,
-    NULL, "use last CE value after change", "use last CE value after change"
+    NULL,
+    "use last CE value after change",  "use last CE value after change"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(5),
     GADGET_ID_CUSTOM_WALK_TO_OBJECT,   GADGET_ID_NONE,
     &custom_element_properties[EP_WALK_TO_OBJECT],
-    NULL, NULL,                                "player can dig/collect/push element"
+    NULL,
+    NULL,                              "player can dig/collect/push element"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(9),
     GADGET_ID_CUSTOM_INDESTRUCTIBLE,   GADGET_ID_NONE,
     &custom_element_properties[EP_INDESTRUCTIBLE],
-    NULL, "indestructible",            "element is indestructible"
+    NULL,
+    "indestructible",                  "element is indestructible"
   },
 
   /* ---------- element settings: configure 2 (custom elements) ----------- */
@@ -2667,55 +2728,64 @@ static struct
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(1),
     GADGET_ID_CUSTOM_CAN_MOVE,         GADGET_ID_NONE,
     &custom_element_properties[EP_CAN_MOVE],
-    NULL, NULL,                                "element can move with some pattern"
+    NULL,
+    NULL,                              "element can move with some pattern"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(7),
     GADGET_ID_CUSTOM_CAN_FALL,         GADGET_ID_NONE,
     &custom_element_properties[EP_CAN_FALL],
-    NULL, "can fall",                  "element can fall down"
+    NULL,
+    "can fall",                                "element can fall down"
   },
   {
     -1,                                        ED_ELEMENT_SETTINGS_YPOS(7),
     GADGET_ID_CUSTOM_CAN_SMASH,                GADGET_ID_CUSTOM_CAN_FALL,
     &custom_element_properties[EP_CAN_SMASH],
-    " ", NULL,                         "element can smash other elements"
+    " ",
+    NULL,                              "element can smash other elements"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(8),
     GADGET_ID_CUSTOM_SLIPPERY,         GADGET_ID_NONE,
     &custom_element_properties[EP_SLIPPERY],
-    NULL, NULL,                                "other elements can fall down from it"
+    NULL,
+    NULL,                              "other elements can fall down from it"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(9),
     GADGET_ID_CUSTOM_DEADLY,           GADGET_ID_NONE,
     &custom_element_properties[EP_DEADLY],
-    NULL, NULL,                                "element can kill the player"
+    NULL,
+    NULL,                              "element can kill the player"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(10),
     GADGET_ID_CUSTOM_CAN_EXPLODE,      GADGET_ID_NONE,
     &custom_element_properties[EP_CAN_EXPLODE],
-    NULL, NULL,                                "element can explode"
+    NULL,
+    NULL,                              "element can explode"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(1),       ED_ELEMENT_SETTINGS_YPOS(11),
     GADGET_ID_CUSTOM_EXPLODE_FIRE,     GADGET_ID_NONE,
     &custom_element_properties[EP_EXPLODES_BY_FIRE],
-    NULL, "by fire",                   "element can explode by fire/explosion"
+    NULL,
+    "by fire",                         "element can explode by fire/explosion"
   },
   {
     -1,                                        ED_ELEMENT_SETTINGS_YPOS(11),
     GADGET_ID_CUSTOM_EXPLODE_SMASH,    GADGET_ID_CUSTOM_EXPLODE_FIRE,
     &custom_element_properties[EP_EXPLODES_SMASHED],
-    " ", "smashed",                    "element can explode when smashed"
+    " ",
+    "smashed",                         "element can explode when smashed"
   },
   {
     -1,                                        ED_ELEMENT_SETTINGS_YPOS(11),
     GADGET_ID_CUSTOM_EXPLODE_IMPACT,   GADGET_ID_CUSTOM_EXPLODE_SMASH,
     &custom_element_properties[EP_EXPLODES_IMPACT],
-    " ", "impact",                     "element can explode on impact"
+    " ",
+    "impact",                          "element can explode on impact"
   },
 
   /* ---------- element settings: advanced (custom elements) --------------- */
@@ -2724,55 +2794,64 @@ static struct
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(1),
     GADGET_ID_CUSTOM_CAN_CHANGE,       GADGET_ID_NONE,
     &custom_element_change.can_change,
-    NULL, "element changes to:",       "change element on specified condition"
+    NULL,
+    "element changes to:",             "change element on specified condition"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(1),       ED_ELEMENT_SETTINGS_YPOS(2),
     GADGET_ID_CHANGE_DELAY,            GADGET_ID_NONE,
     &custom_element_change_events[CE_DELAY],
-    NULL, NULL,                                "element changes after delay"
+    NULL,
+    NULL,                              "element changes after delay"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(1),       ED_ELEMENT_SETTINGS_YPOS(4),
     GADGET_ID_CHANGE_BY_DIRECT_ACT,    GADGET_ID_NONE,
     &custom_element_change_events[CE_BY_DIRECT_ACTION],
-    NULL, NULL,                                "element changes by direct action"
+    NULL,
+    NULL,                              "element changes by direct action"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(1),       ED_ELEMENT_SETTINGS_YPOS(5),
     GADGET_ID_CHANGE_BY_OTHER_ACT,     GADGET_ID_NONE,
     &custom_element_change_events[CE_BY_OTHER_ACTION],
-    NULL, NULL,                                "element changes by other element"
+    NULL,
+    NULL,                              "element changes by other element"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(1),       ED_ELEMENT_SETTINGS_YPOS(8),
     GADGET_ID_CHANGE_USE_EXPLOSION,    GADGET_ID_NONE,
     &custom_element_change.explode,
-    NULL, "explode instead of change", "element explodes instead of change"
+    NULL,
+    "explode instead of change",       "element explodes instead of change"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(1),       ED_ELEMENT_SETTINGS_YPOS(9),
     GADGET_ID_CHANGE_USE_CONTENT,      GADGET_ID_NONE,
     &custom_element_change.use_target_content,
-    NULL, "use extended change target:","element changes to more elements"
+    NULL,
+    "use extended change target:",     "element changes to more elements"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(2),       ED_ELEMENT_SETTINGS_YPOS(11),
     GADGET_ID_CHANGE_ONLY_COMPLETE,    GADGET_ID_NONE,
     &custom_element_change.only_if_complete,
-    NULL, "replace all or nothing",    "only replace when all can be changed"
+    NULL,
+    "replace all or nothing",          "only replace when all can be changed"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(2),       ED_ELEMENT_SETTINGS_YPOS(12),
     GADGET_ID_CHANGE_USE_RANDOM,       GADGET_ID_NONE,
     &custom_element_change.use_random_replace,
-    NULL, NULL,                                "use percentage for random replace"
+    NULL,
+    NULL,                              "use percentage for random replace"
   },
   {
     ED_ELEMENT_SETTINGS_XPOS(0),       ED_ELEMENT_SETTINGS_YPOS(13),
     GADGET_ID_CHANGE_HAS_ACTION,       GADGET_ID_NONE,
     &custom_element_change.has_action,
-    NULL, NULL,                                "execute action on specified condition"
+    NULL,
+    NULL,                              "execute action on specified condition"
   },
 };
 
@@ -2993,7 +3072,7 @@ static struct
   /* ---------- custom change content (extended change target) ------------- */
 
   {
-    -1,                                        ED_AREA_3X3_SETTINGS_YPOS(10),
+    -1,                                        ED_AREA_3X3_SETTINGS_YPOS(9),
     GADGET_ID_CUSTOM_CHANGE_CONTENT,   GADGET_ID_NONE, /* align three rows */
     &custom_element_change.target_content.e[0][0], 3, 3,
     NULL, NULL, NULL,                  "new extended elements after change"
@@ -3040,7 +3119,11 @@ static int ed_fieldx = MAX_ED_FIELDX - 1, ed_fieldy = MAX_ED_FIELDY - 1;
 /* actual position of level editor drawing area in level playfield */
 static int level_xpos = -1, level_ypos = -1;
 
+#if 1
+#define IN_ED_FIELD(x,y)       IN_FIELD(x, y, ed_fieldx, ed_fieldy)
+#else
 #define IN_ED_FIELD(x,y)  ((x)>=0 && (x)<ed_fieldx && (y)>=0 &&(y)<ed_fieldy)
+#endif
 
 /* drawing elements on the three mouse buttons */
 static int new_element1 = EL_WALL;
@@ -3091,6 +3174,7 @@ static int properties_element = 0;
 
 static short FieldBackup[MAX_LEV_FIELDX][MAX_LEV_FIELDY];
 static short UndoBuffer[NUM_UNDO_STEPS][MAX_LEV_FIELDX][MAX_LEV_FIELDY];
+static short IntelliDrawBuffer[MAX_LEV_FIELDX][MAX_LEV_FIELDY];
 static int undo_buffer_position = 0;
 static int undo_buffer_steps = 0;
 
@@ -3099,57 +3183,50 @@ static int edit_mode_properties;
 
 static int element_shift = 0;
 
+static int editor_el_players[] =
+{
+  EL_PLAYER_1,
+  EL_PLAYER_2,
+  EL_PLAYER_3,
+  EL_PLAYER_4
+};
+static int *editor_el_players_ptr = editor_el_players;
+static int num_editor_el_players = SIZEOF_ARRAY_INT(editor_el_players);
+
 static int editor_hl_boulderdash[] =
 {
   EL_INTERNAL_CASCADE_BD_ACTIVE,
   EL_CHAR('B'),
   EL_CHAR('D'),
   EL_EMPTY,
-
-#if 0
-  EL_CHAR('B'),
-  EL_CHAR('O'),
-  EL_CHAR('U'),
-  EL_CHAR('L'),
-
-  EL_CHAR('-'),
-  EL_CHAR('D'),
-  EL_CHAR('E'),
-  EL_CHAR('R'),
-
-  EL_CHAR('D'),
-  EL_CHAR('A'),
-  EL_CHAR('S'),
-  EL_CHAR('H'),
-#endif
 };
 
 static int editor_el_boulderdash[] =
 {
-  EL_PLAYER_1,
   EL_EMPTY,
   EL_SAND,
-  EL_STEELWALL,
+  EL_BD_ROCK,
+  EL_BD_DIAMOND,
 
+  EL_STEELWALL,
   EL_BD_WALL,
+  EL_BD_EXPANDABLE_WALL,
   EL_BD_MAGIC_WALL,
-  EL_EXIT_CLOSED,
-  EL_EXIT_OPEN,
 
-  EL_BD_DIAMOND,
+  EL_BD_AMOEBA,
   EL_BD_BUTTERFLY_UP,
   EL_BD_FIREFLY_UP,
-  EL_BD_ROCK,
+  EL_EXIT_CLOSED,
 
   EL_BD_BUTTERFLY_LEFT,
   EL_BD_FIREFLY_LEFT,
   EL_BD_BUTTERFLY_RIGHT,
   EL_BD_FIREFLY_RIGHT,
 
-  EL_BD_AMOEBA,
+  EL_EMPTY,
   EL_BD_BUTTERFLY_DOWN,
   EL_BD_FIREFLY_DOWN,
-  EL_EMPTY,
+  EL_EXIT_OPEN,
 };
 static int *editor_hl_boulderdash_ptr = editor_hl_boulderdash;
 static int *editor_el_boulderdash_ptr = editor_el_boulderdash;
@@ -3162,36 +3239,14 @@ static int editor_hl_emerald_mine[] =
   EL_CHAR('E'),
   EL_CHAR('M'),
   EL_EMPTY,
-
-#if 0
-  EL_CHAR('E'),
-  EL_CHAR('M'),
-  EL_CHAR('E'),
-  EL_CHAR('-'),
-
-  EL_CHAR('R'),
-  EL_CHAR('A'),
-  EL_CHAR('L'),
-  EL_CHAR('D'),
-
-  EL_CHAR('M'),
-  EL_CHAR('I'),
-  EL_CHAR('N'),
-  EL_CHAR('E'),
-#endif
 };
 
 static int editor_el_emerald_mine[] =
 {
-  EL_PLAYER_1,
-  EL_PLAYER_2,
-  EL_PLAYER_3,
-  EL_PLAYER_4,
-
-  EL_PLAYER_1,
-  EL_EMPTY,
   EL_SAND,
   EL_ROCK,
+  EL_QUICKSAND_EMPTY,
+  EL_QUICKSAND_FULL,
 
   EL_STEELWALL,
   EL_WALL,
@@ -3205,13 +3260,8 @@ static int editor_el_emerald_mine[] =
 
   EL_WALL_EMERALD,
   EL_WALL_DIAMOND,
-  EL_QUICKSAND_EMPTY,
-  EL_QUICKSAND_FULL,
-
   EL_DYNAMITE,
   EL_DYNAMITE_ACTIVE,
-  EL_EXIT_CLOSED,
-  EL_EXIT_OPEN,
 
   EL_YAMYAM,
   EL_BUG_UP,
@@ -3231,17 +3281,12 @@ static int editor_el_emerald_mine[] =
   EL_ACID_POOL_TOPLEFT,
   EL_ACID,
   EL_ACID_POOL_TOPRIGHT,
-  EL_EMPTY,
+  EL_AMOEBA_DROP,
 
   EL_ACID_POOL_BOTTOMLEFT,
   EL_ACID_POOL_BOTTOM,
   EL_ACID_POOL_BOTTOMRIGHT,
-  EL_EMPTY,
-
-  EL_AMOEBA_DROP,
-  EL_AMOEBA_DEAD,
   EL_AMOEBA_WET,
-  EL_AMOEBA_DRY,
 
   EL_EM_KEY_1,
   EL_EM_KEY_2,
@@ -3269,28 +3314,6 @@ static int editor_hl_emerald_mine_club[] =
   EL_CHAR('E'),
   EL_CHAR('M'),
   EL_CHAR('C'),
-
-#if 0
-  EL_CHAR('E'),
-  EL_CHAR('M'),
-  EL_CHAR('E'),
-  EL_CHAR('-'),
-
-  EL_CHAR('R'),
-  EL_CHAR('A'),
-  EL_CHAR('L'),
-  EL_CHAR('D'),
-
-  EL_CHAR('M'),
-  EL_CHAR('I'),
-  EL_CHAR('N'),
-  EL_CHAR('E'),
-
-  EL_CHAR('C'),
-  EL_CHAR('L'),
-  EL_CHAR('U'),
-  EL_CHAR('B'),
-#endif
 };
 
 static int editor_el_emerald_mine_club[] =
@@ -3340,62 +3363,50 @@ static int editor_el_emerald_mine_club[] =
   EL_EMC_WALL_11,
   EL_EMC_WALL_12,
 
-  EL_EMC_ANDROID,
-  EL_BALLOON,
-  EL_BALLOON_SWITCH_ANY,
-  EL_BALLOON_SWITCH_NONE,
-
-  EL_BALLOON_SWITCH_LEFT,
-  EL_BALLOON_SWITCH_RIGHT,
-  EL_BALLOON_SWITCH_UP,
-  EL_BALLOON_SWITCH_DOWN,
-
   EL_EMC_GRASS,
+  EL_EMC_FAKE_GRASS,
   EL_EMC_PLANT,
-  EL_EMC_LENSES,
-  EL_EMC_MAGNIFIER,
+  EL_EMC_DRIPPER,
 
   EL_EMC_MAGIC_BALL,
   EL_EMC_MAGIC_BALL_SWITCH,
   EL_SPRING,
   EL_EMC_SPRING_BUMPER,
 
-  EL_EMC_DRIPPER,
-  EL_EMC_FAKE_GRASS,
-  EL_EMPTY,
-  EL_EMPTY,
-
+  EL_EMC_LENSES,
+  EL_EMC_MAGNIFIER,
   EL_EM_DYNAMITE,
   EL_EM_DYNAMITE_ACTIVE,
-  EL_EMPTY,
-  EL_EMPTY,
+
+  EL_BALLOON,
+  EL_YAMYAM_UP,
+  EL_BALLOON_SWITCH_UP,
+  EL_BALLOON_SWITCH_ANY,
 
   EL_YAMYAM_LEFT,
+  EL_BALLOON_SWITCH_LEFT,
   EL_YAMYAM_RIGHT,
-  EL_YAMYAM_UP,
+  EL_BALLOON_SWITCH_RIGHT,
+
+  EL_EMC_ANDROID,
   EL_YAMYAM_DOWN,
+  EL_BALLOON_SWITCH_DOWN,
+  EL_BALLOON_SWITCH_NONE,
 };
 static int *editor_hl_emerald_mine_club_ptr = editor_hl_emerald_mine_club;
 static int *editor_el_emerald_mine_club_ptr = editor_el_emerald_mine_club;
 static int num_editor_hl_emerald_mine_club=SIZEOF_ARRAY_INT(editor_hl_emerald_mine_club);
 static int num_editor_el_emerald_mine_club=SIZEOF_ARRAY_INT(editor_el_emerald_mine_club);
 
-static int editor_hl_more[] =
+static int editor_hl_rnd[] =
 {
   EL_INTERNAL_CASCADE_RND_ACTIVE,
   EL_CHAR('R'),
   EL_CHAR('N'),
   EL_CHAR('D'),
-
-#if 0
-  EL_CHAR('M'),
-  EL_CHAR('O'),
-  EL_CHAR('R'),
-  EL_CHAR('E'),
-#endif
 };
 
-static int editor_el_more[] =
+static int editor_el_rnd[] =
 {
   EL_KEY_1,
   EL_KEY_2,
@@ -3417,17 +3428,22 @@ static int editor_el_more[] =
   EL_ARROW_UP,
   EL_ARROW_DOWN,
 
+  EL_AMOEBA_DEAD,
+  EL_AMOEBA_DRY,
   EL_AMOEBA_FULL,
+  EL_GAME_OF_LIFE,
+
   EL_EMERALD_YELLOW,
   EL_EMERALD_RED,
   EL_EMERALD_PURPLE,
+  EL_BIOMAZE,
 
-  EL_WALL_BD_DIAMOND,
   EL_WALL_EMERALD_YELLOW,
   EL_WALL_EMERALD_RED,
   EL_WALL_EMERALD_PURPLE,
+  EL_WALL_BD_DIAMOND,
 
-  EL_GAME_OF_LIFE,
+  EL_SPEED_PILL,
   EL_PACMAN_UP,
   EL_TIME_ORB_FULL,
   EL_TIME_ORB_EMPTY,
@@ -3435,9 +3451,9 @@ static int editor_el_more[] =
   EL_PACMAN_LEFT,
   EL_DARK_YAMYAM,
   EL_PACMAN_RIGHT,
-  EL_EXPANDABLE_WALL,
+  EL_EMPTY,
 
-  EL_BIOMAZE,
+  EL_BLACK_ORB,
   EL_PACMAN_DOWN,
   EL_LAMP,
   EL_LAMP_ACTIVE,
@@ -3458,29 +3474,24 @@ static int editor_el_more[] =
   EL_BD_FIREFLY,
 
   EL_MOLE_LEFT,
-  EL_EMPTY,
+  EL_SATELLITE,
   EL_MOLE_RIGHT,
   EL_PACMAN,
 
   EL_SPACESHIP,
   EL_MOLE_DOWN,
-  EL_EMPTY,
-  EL_EMPTY,
+  EL_INVISIBLE_STEELWALL,
+  EL_INVISIBLE_WALL,
 
-  EL_SATELLITE,
+  EL_EXPANDABLE_WALL,
   EL_EXPANDABLE_WALL_HORIZONTAL,
   EL_EXPANDABLE_WALL_VERTICAL,
   EL_EXPANDABLE_WALL_ANY,
-
-  EL_INVISIBLE_STEELWALL,
-  EL_INVISIBLE_WALL,
-  EL_SPEED_PILL,
-  EL_BLACK_ORB,
 };
-static int *editor_hl_more_ptr = editor_hl_more;
-static int *editor_el_more_ptr = editor_el_more;
-static int num_editor_hl_more = SIZEOF_ARRAY_INT(editor_hl_more);
-static int num_editor_el_more = SIZEOF_ARRAY_INT(editor_el_more);
+static int *editor_hl_rnd_ptr = editor_hl_rnd;
+static int *editor_el_rnd_ptr = editor_el_rnd;
+static int num_editor_hl_rnd = SIZEOF_ARRAY_INT(editor_hl_rnd);
+static int num_editor_el_rnd = SIZEOF_ARRAY_INT(editor_el_rnd);
 
 static int editor_hl_sokoban[] =
 {
@@ -3488,19 +3499,7 @@ static int editor_hl_sokoban[] =
   EL_CHAR('S'),
   EL_CHAR('B'),
   EL_EMPTY,
-
-#if 0
-  EL_CHAR('S'),
-  EL_CHAR('O'),
-  EL_CHAR('K'),
-  EL_CHAR('O'),
-
-  EL_CHAR('-'),
-  EL_CHAR('B'),
-  EL_CHAR('A'),
-  EL_CHAR('N'),
-#endif
-};
+};
 
 static int editor_el_sokoban[] =
 {
@@ -3520,74 +3519,58 @@ static int editor_hl_supaplex[] =
   EL_CHAR('S'),
   EL_CHAR('P'),
   EL_EMPTY,
-
-#if 0
-  EL_CHAR('S'),
-  EL_CHAR('U'),
-  EL_CHAR('P'),
-  EL_CHAR('A'),
-
-  EL_CHAR('P'),
-  EL_CHAR('L'),
-  EL_CHAR('E'),
-  EL_CHAR('X'),
-#endif
 };
 
 static int editor_el_supaplex[] =
 {
-#if 1
+  EL_SP_MURPHY,
   EL_EMPTY,
-#else
-  EL_SP_EMPTY,
-#endif
-  EL_SP_ZONK,
   EL_SP_BASE,
-  EL_SP_MURPHY,
+  EL_SP_BUGGY_BASE,
 
   EL_SP_INFOTRON,
-  EL_SP_CHIP_SINGLE,
-  EL_SP_HARDWARE_GRAY,
-  EL_SP_EXIT_CLOSED,
+  EL_SP_ZONK,
+  EL_SP_SNIKSNAK,
+  EL_SP_ELECTRON,
 
+  EL_SP_DISK_RED,
   EL_SP_DISK_ORANGE,
-  EL_SP_PORT_RIGHT,
-  EL_SP_PORT_DOWN,
-  EL_SP_PORT_LEFT,
-
-  EL_SP_PORT_UP,
-  EL_SP_GRAVITY_PORT_RIGHT,
-  EL_SP_GRAVITY_PORT_DOWN,
-  EL_SP_GRAVITY_PORT_LEFT,
-
-  EL_SP_GRAVITY_PORT_UP,
-  EL_SP_SNIKSNAK,
   EL_SP_DISK_YELLOW,
   EL_SP_TERMINAL,
 
-  EL_SP_DISK_RED,
-  EL_SP_PORT_VERTICAL,
+  EL_SP_EXIT_CLOSED,
   EL_SP_PORT_HORIZONTAL,
+  EL_SP_PORT_VERTICAL,
   EL_SP_PORT_ANY,
 
-  EL_SP_ELECTRON,
-  EL_SP_BUGGY_BASE,
-  EL_SP_CHIP_LEFT,
-  EL_SP_CHIP_RIGHT,
+  EL_SP_PORT_LEFT,
+  EL_SP_PORT_RIGHT,
+  EL_SP_PORT_UP,
+  EL_SP_PORT_DOWN,
 
-  EL_SP_HARDWARE_BASE_1,
+  EL_SP_GRAVITY_PORT_LEFT,
+  EL_SP_GRAVITY_PORT_RIGHT,
+  EL_SP_GRAVITY_PORT_UP,
+  EL_SP_GRAVITY_PORT_DOWN,
+
+  EL_SP_HARDWARE_GRAY,
   EL_SP_HARDWARE_GREEN,
   EL_SP_HARDWARE_BLUE,
   EL_SP_HARDWARE_RED,
 
-  EL_SP_HARDWARE_YELLOW,
+  EL_SP_HARDWARE_BASE_1,
   EL_SP_HARDWARE_BASE_2,
   EL_SP_HARDWARE_BASE_3,
   EL_SP_HARDWARE_BASE_4,
 
   EL_SP_HARDWARE_BASE_5,
   EL_SP_HARDWARE_BASE_6,
+  EL_SP_HARDWARE_YELLOW,
   EL_SP_CHIP_TOP,
+
+  EL_SP_CHIP_SINGLE,
+  EL_SP_CHIP_LEFT,
+  EL_SP_CHIP_RIGHT,
   EL_SP_CHIP_BOTTOM,
 };
 static int *editor_hl_supaplex_ptr = editor_hl_supaplex;
@@ -3601,28 +3584,6 @@ static int editor_hl_diamond_caves[] =
   EL_CHAR('D'),
   EL_CHAR('C'),
   EL_CHAR('2'),
-
-#if 0
-  EL_CHAR('D'),
-  EL_CHAR('I'),
-  EL_CHAR('A'),
-  EL_CHAR('-'),
-
-  EL_CHAR('M'),
-  EL_CHAR('O'),
-  EL_CHAR('N'),
-  EL_CHAR('D'),
-
-  EL_CHAR('C'),
-  EL_CHAR('A'),
-  EL_CHAR('V'),
-  EL_CHAR('E'),
-
-  EL_CHAR('S'),
-  EL_CHAR(' '),
-  EL_CHAR('I'),
-  EL_CHAR('I'),
-#endif
 };
 
 static int editor_el_diamond_caves[] =
@@ -3662,35 +3623,130 @@ static int editor_el_diamond_caves[] =
   EL_CONVEYOR_BELT_3_SWITCH_RIGHT,
   EL_CONVEYOR_BELT_4_SWITCH_RIGHT,
 
-  EL_SWITCHGATE_OPEN,
-  EL_SWITCHGATE_CLOSED,
-  EL_SWITCHGATE_SWITCH_UP,
-  EL_EMPTY,
-
-  EL_ENVELOPE_1,
-  EL_ENVELOPE_2,
-  EL_ENVELOPE_3,
-  EL_ENVELOPE_4,
-
   EL_TIMEGATE_CLOSED,
   EL_TIMEGATE_OPEN,
   EL_TIMEGATE_SWITCH,
-  EL_EMPTY,
+  EL_DC_TIMEGATE_SWITCH,
 
-  EL_LANDMINE,
-  EL_INVISIBLE_SAND,
-  EL_STEELWALL_SLIPPERY,
+  EL_SWITCHGATE_CLOSED,
+  EL_SWITCHGATE_OPEN,
+  EL_SWITCHGATE_SWITCH_UP,
+  EL_SWITCHGATE_SWITCH_DOWN,
+
+  EL_EMPTY,
   EL_EMPTY,
+  EL_DC_SWITCHGATE_SWITCH_UP,
+  EL_DC_SWITCHGATE_SWITCH_DOWN,
 
   EL_SIGN_EXCLAMATION,
   EL_SIGN_STOP,
   EL_LIGHT_SWITCH,
   EL_LIGHT_SWITCH_ACTIVE,
 
+  EL_STEELWALL_SLIPPERY,
+  EL_INVISIBLE_SAND,
+  EL_LANDMINE,
+  EL_DC_LANDMINE,
+
   EL_SHIELD_NORMAL,
   EL_SHIELD_DEADLY,
   EL_EXTRA_TIME,
   EL_EMPTY,
+
+  EL_ENVELOPE_1,
+  EL_ENVELOPE_2,
+  EL_ENVELOPE_3,
+  EL_ENVELOPE_4,
+
+  EL_SIGN_RADIOACTIVITY,
+  EL_SIGN_WHEELCHAIR,
+  EL_SIGN_PARKING,
+  EL_SIGN_NO_ENTRY,
+
+  EL_SIGN_GIVE_WAY,
+  EL_SIGN_ENTRY_FORBIDDEN,
+  EL_SIGN_EMERGENCY_EXIT,
+  EL_SIGN_YIN_YANG,
+
+  EL_SIGN_SPERMS,
+  EL_SIGN_BULLET,
+  EL_SIGN_HEART,
+  EL_SIGN_CROSS,
+
+  EL_SIGN_FRANKIE,
+  EL_EMPTY,
+  EL_EMPTY,
+  EL_EMPTY,
+
+  EL_SPERMS,
+  EL_BULLET,
+  EL_HEART,
+  EL_CROSS,
+
+  EL_FRANKIE,
+  EL_EMPTY,
+  EL_EMPTY,
+  EL_EMPTY,
+
+  EL_DC_STEELWALL_2_SINGLE,
+  EL_DC_STEELWALL_2_TOP,
+  EL_STEEL_EXIT_CLOSED,
+  EL_STEEL_EXIT_OPEN,
+
+  EL_DC_STEELWALL_2_LEFT,
+  EL_DC_STEELWALL_2_MIDDLE,
+  EL_DC_STEELWALL_2_HORIZONTAL,
+  EL_DC_STEELWALL_2_RIGHT,
+
+  EL_DC_STEELWALL_1_TOPLEFT,
+  EL_DC_STEELWALL_2_VERTICAL,
+  EL_DC_STEELWALL_1_TOPRIGHT,
+  EL_EMPTY,
+
+  EL_DC_STEELWALL_1_VERTICAL,
+  EL_DC_STEELWALL_2_BOTTOM,
+  EL_EMPTY,
+  EL_EMPTY,
+
+  EL_DC_STEELWALL_1_BOTTOMLEFT,
+  EL_DC_STEELWALL_1_HORIZONTAL,
+  EL_DC_STEELWALL_1_BOTTOMRIGHT,
+  EL_EMPTY,
+
+  EL_DC_STEELWALL_1_BOTTOMRIGHT_2,
+  EL_DC_STEELWALL_1_BOTTOM,
+  EL_DC_STEELWALL_1_BOTTOMLEFT_2,
+  EL_EMPTY,
+
+  EL_DC_STEELWALL_1_RIGHT,
+  EL_EMPTY,
+  EL_DC_STEELWALL_1_LEFT,
+  EL_EMPTY,
+
+  EL_DC_STEELWALL_1_TOPRIGHT_2,
+  EL_DC_STEELWALL_1_TOP,
+  EL_DC_STEELWALL_1_TOPLEFT_2,
+  EL_EMPTY,
+
+  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,
 };
 static int *editor_hl_diamond_caves_ptr = editor_hl_diamond_caves;
 static int *editor_el_diamond_caves_ptr = editor_el_diamond_caves;
@@ -3703,28 +3759,6 @@ static int editor_hl_dx_boulderdash[] =
   EL_CHAR('D'),
   EL_CHAR('X'),
   EL_EMPTY,
-
-#if 0
-  EL_CHAR('D'),
-  EL_CHAR('X'),
-  EL_CHAR('-'),
-  EL_CHAR(' '),
-
-  EL_CHAR('B'),
-  EL_CHAR('O'),
-  EL_CHAR('U'),
-  EL_CHAR('L'),
-
-  EL_CHAR('-'),
-  EL_CHAR('D'),
-  EL_CHAR('E'),
-  EL_CHAR('R'),
-
-  EL_CHAR('D'),
-  EL_CHAR('A'),
-  EL_CHAR('S'),
-  EL_CHAR('H'),
-#endif
 };
 
 static int editor_el_dx_boulderdash[] =
@@ -3760,13 +3794,6 @@ static int editor_hl_chars[] =
   EL_CHAR('T'),
   EL_CHAR('X'),
   EL_CHAR('T'),
-
-#if 0
-  EL_CHAR('T'),
-  EL_CHAR('E'),
-  EL_CHAR('X'),
-  EL_CHAR('T'),
-#endif
 };
 
 static int editor_el_chars[] =
@@ -3859,6 +3886,11 @@ static int editor_el_chars[] =
   EL_CHAR('°'),
   EL_CHAR('®'),
   EL_CHAR(FONT_ASCII_CURSOR),
+  EL_CHAR(FONT_ASCII_BUTTON),
+
+  EL_CHAR(FONT_ASCII_UP),
+  EL_CHAR(FONT_ASCII_DOWN),
+  EL_CHAR(' '),
   EL_CHAR(' ')
 };
 static int *editor_hl_chars_ptr = editor_hl_chars;
@@ -3866,34 +3898,122 @@ static int *editor_el_chars_ptr = editor_el_chars;
 static int num_editor_hl_chars = SIZEOF_ARRAY_INT(editor_hl_chars);
 static int num_editor_el_chars = SIZEOF_ARRAY_INT(editor_el_chars);
 
+static int editor_hl_steel_chars[] =
+{
+  EL_INTERNAL_CASCADE_STEEL_CHARS_ACTIVE,
+  EL_STEEL_CHAR('T'),
+  EL_STEEL_CHAR('X'),
+  EL_STEEL_CHAR('T'),
+};
+
+static int editor_el_steel_chars[] =
+{
+  EL_STEEL_CHAR(' '),
+  EL_STEEL_CHAR('!'),
+  EL_STEEL_CHAR('"'),
+  EL_STEEL_CHAR('#'),
+
+  EL_STEEL_CHAR('$'),
+  EL_STEEL_CHAR('%'),
+  EL_STEEL_CHAR('&'),
+  EL_STEEL_CHAR('\''),
+
+  EL_STEEL_CHAR('('),
+  EL_STEEL_CHAR(')'),
+  EL_STEEL_CHAR('*'),
+  EL_STEEL_CHAR('+'),
+
+  EL_STEEL_CHAR(','),
+  EL_STEEL_CHAR('-'),
+  EL_STEEL_CHAR('.'),
+  EL_STEEL_CHAR('/'),
+
+  EL_STEEL_CHAR('0'),
+  EL_STEEL_CHAR('1'),
+  EL_STEEL_CHAR('2'),
+  EL_STEEL_CHAR('3'),
+
+  EL_STEEL_CHAR('4'),
+  EL_STEEL_CHAR('5'),
+  EL_STEEL_CHAR('6'),
+  EL_STEEL_CHAR('7'),
+
+  EL_STEEL_CHAR('8'),
+  EL_STEEL_CHAR('9'),
+  EL_STEEL_CHAR(':'),
+  EL_STEEL_CHAR(';'),
+
+  EL_STEEL_CHAR('<'),
+  EL_STEEL_CHAR('='),
+  EL_STEEL_CHAR('>'),
+  EL_STEEL_CHAR('?'),
+
+  EL_STEEL_CHAR('@'),
+  EL_STEEL_CHAR('A'),
+  EL_STEEL_CHAR('B'),
+  EL_STEEL_CHAR('C'),
+
+  EL_STEEL_CHAR('D'),
+  EL_STEEL_CHAR('E'),
+  EL_STEEL_CHAR('F'),
+  EL_STEEL_CHAR('G'),
+
+  EL_STEEL_CHAR('H'),
+  EL_STEEL_CHAR('I'),
+  EL_STEEL_CHAR('J'),
+  EL_STEEL_CHAR('K'),
+
+  EL_STEEL_CHAR('L'),
+  EL_STEEL_CHAR('M'),
+  EL_STEEL_CHAR('N'),
+  EL_STEEL_CHAR('O'),
+
+  EL_STEEL_CHAR('P'),
+  EL_STEEL_CHAR('Q'),
+  EL_STEEL_CHAR('R'),
+  EL_STEEL_CHAR('S'),
+
+  EL_STEEL_CHAR('T'),
+  EL_STEEL_CHAR('U'),
+  EL_STEEL_CHAR('V'),
+  EL_STEEL_CHAR('W'),
+
+  EL_STEEL_CHAR('X'),
+  EL_STEEL_CHAR('Y'),
+  EL_STEEL_CHAR('Z'),
+  EL_STEEL_CHAR('['),
+
+  EL_STEEL_CHAR('\\'),
+  EL_STEEL_CHAR(']'),
+  EL_STEEL_CHAR('^'),
+  EL_STEEL_CHAR('_'),
+
+  EL_STEEL_CHAR('©'),
+  EL_STEEL_CHAR('Ä'),
+  EL_STEEL_CHAR('Ö'),
+  EL_STEEL_CHAR('Ãœ'),
+
+  EL_STEEL_CHAR('°'),
+  EL_STEEL_CHAR('®'),
+  EL_STEEL_CHAR(FONT_ASCII_CURSOR),
+  EL_STEEL_CHAR(FONT_ASCII_BUTTON),
+
+  EL_STEEL_CHAR(FONT_ASCII_UP),
+  EL_STEEL_CHAR(FONT_ASCII_DOWN),
+  EL_STEEL_CHAR(' '),
+  EL_STEEL_CHAR(' ')
+};
+static int *editor_hl_steel_chars_ptr = editor_hl_steel_chars;
+static int *editor_el_steel_chars_ptr = editor_el_steel_chars;
+static int num_editor_hl_steel_chars = SIZEOF_ARRAY_INT(editor_hl_steel_chars);
+static int num_editor_el_steel_chars = SIZEOF_ARRAY_INT(editor_el_steel_chars);
+
 static int editor_hl_custom[] =
 {
   EL_INTERNAL_CASCADE_CE_ACTIVE,
   EL_CHAR('C'),
   EL_CHAR('E'),
   EL_EMPTY,
-
-#if 0
-  EL_CHAR('C'),
-  EL_CHAR('U'),
-  EL_CHAR('S'),
-  EL_CHAR('-'),
-
-  EL_CHAR('T'),
-  EL_CHAR('O'),
-  EL_CHAR('M'),
-  EL_CHAR(' '),
-
-  EL_CHAR('E'),
-  EL_CHAR('L'),
-  EL_CHAR('E'),
-  EL_CHAR('M'),
-
-  EL_CHAR('E'),
-  EL_CHAR('N'),
-  EL_CHAR('T'),
-  EL_CHAR('S'),
-#endif
 };
 
 static int editor_el_custom[] =
@@ -4216,12 +4336,7 @@ static int editor_el_custom[] =
   EL_CUSTOM_START + 252,
   EL_CUSTOM_START + 253,
   EL_CUSTOM_START + 254,
-  EL_CUSTOM_START + 255,
-
-  EL_TRIGGER_PLAYER,
-  EL_TRIGGER_ELEMENT,
-  EL_TRIGGER_CE_VALUE,
-  EL_EMPTY
+  EL_CUSTOM_START + 255
 };
 static int *editor_hl_custom_ptr = editor_hl_custom;
 static int *editor_el_custom_ptr = editor_el_custom;
@@ -4234,28 +4349,6 @@ static int editor_hl_group[] =
   EL_CHAR('G'),
   EL_CHAR('E'),
   EL_EMPTY,
-
-#if 0
-  EL_CHAR('G'),
-  EL_CHAR('R'),
-  EL_CHAR('O'),
-  EL_CHAR('U'),
-
-  EL_CHAR('P'),
-  EL_CHAR(' '),
-  EL_CHAR(' '),
-  EL_CHAR(' '),
-
-  EL_CHAR('E'),
-  EL_CHAR('L'),
-  EL_CHAR('E'),
-  EL_CHAR('M'),
-
-  EL_CHAR('E'),
-  EL_CHAR('N'),
-  EL_CHAR('T'),
-  EL_CHAR('S'),
-#endif
 };
 
 static int editor_el_group[] =
@@ -4305,30 +4398,58 @@ static int *editor_el_group_ptr = editor_el_group;
 static int num_editor_hl_group = SIZEOF_ARRAY_INT(editor_hl_group);
 static int num_editor_el_group = SIZEOF_ARRAY_INT(editor_el_group);
 
+static int editor_hl_reference[] =
+{
+  EL_INTERNAL_CASCADE_REF_ACTIVE,
+  EL_CHAR('R'),
+  EL_CHAR('E'),
+  EL_CHAR('F')
+};
+
+static int editor_el_reference[] =
+{
+  EL_TRIGGER_PLAYER,
+  EL_TRIGGER_ELEMENT,
+  EL_TRIGGER_CE_VALUE,
+  EL_TRIGGER_CE_SCORE,
+
+  EL_SELF,
+  EL_ANY_ELEMENT,
+  EL_CURRENT_CE_VALUE,
+  EL_CURRENT_CE_SCORE,
+
+  EL_PREV_CE_8,
+  EL_PREV_CE_7,
+  EL_PREV_CE_6,
+  EL_PREV_CE_5,
+
+  EL_PREV_CE_4,
+  EL_PREV_CE_3,
+  EL_PREV_CE_2,
+  EL_PREV_CE_1,
+
+  EL_NEXT_CE_1,
+  EL_NEXT_CE_2,
+  EL_NEXT_CE_3,
+  EL_NEXT_CE_4,
+
+  EL_NEXT_CE_5,
+  EL_NEXT_CE_6,
+  EL_NEXT_CE_7,
+  EL_NEXT_CE_8,
+};
+static int *editor_hl_reference_ptr = editor_hl_reference;
+static int *editor_el_reference_ptr = editor_el_reference;
+static int num_editor_hl_reference = SIZEOF_ARRAY_INT(editor_hl_reference);
+static int num_editor_el_reference = SIZEOF_ARRAY_INT(editor_el_reference);
+
 static int editor_hl_user_defined[] =
 {
   EL_INTERNAL_CASCADE_USER_ACTIVE,
   EL_CHAR('M'),
   EL_CHAR('Y'),
   EL_EMPTY,
-
-#if 0
-  EL_CHAR('U'),
-  EL_CHAR('S'),
-  EL_CHAR('E'),
-  EL_CHAR('R'),
-
-  EL_CHAR('D'),
-  EL_CHAR('E'),
-  EL_CHAR('F'),
-  EL_CHAR('I'),
-
-  EL_CHAR('-'),
-  EL_CHAR('N'),
-  EL_CHAR('E'),
-  EL_CHAR('D'),
-#endif
-};
+};
 
 static int *editor_hl_user_defined_ptr = editor_hl_user_defined;
 static int *editor_el_user_defined_ptr = NULL;
@@ -4361,6 +4482,13 @@ static boolean use_el_empty = FALSE;
 static int *editor_elements = NULL;    /* dynamically allocated */
 static int num_editor_elements = 0;    /* dynamically determined */
 
+static boolean setup_editor_show_always = TRUE;
+static boolean setup_editor_cascade_never = FALSE;
+
+static int editor_hl_unused[] = { EL_EMPTY };
+static int *editor_hl_unused_ptr = editor_hl_unused;
+static int num_editor_hl_unused = 0;
+
 static struct
 {
   boolean *setup_value;
@@ -4376,6 +4504,12 @@ static struct
 }
 editor_elements_info[] =
 {
+  {
+    &setup_editor_show_always,
+    &setup_editor_cascade_never,
+    &editor_hl_unused_ptr,             &num_editor_hl_unused,
+    &editor_el_players_ptr,            &num_editor_el_players
+  },
   {
     &setup.editor.el_boulderdash,
     &setup.editor_cascade.el_bd,
@@ -4397,8 +4531,8 @@ editor_elements_info[] =
   {
     &setup.editor.el_more,
     &setup.editor_cascade.el_rnd,
-    &editor_hl_more_ptr,               &num_editor_hl_more,
-    &editor_el_more_ptr,               &num_editor_el_more
+    &editor_hl_rnd_ptr,                        &num_editor_hl_rnd,
+    &editor_el_rnd_ptr,                        &num_editor_el_rnd
   },
   {
     &setup.editor.el_sokoban,
@@ -4430,6 +4564,12 @@ editor_elements_info[] =
     &editor_hl_chars_ptr,              &num_editor_hl_chars,
     &editor_el_chars_ptr,              &num_editor_el_chars
   },
+  {
+    &setup.editor.el_steel_chars,
+    &setup.editor_cascade.el_steel_chars,
+    &editor_hl_steel_chars_ptr,                &num_editor_hl_steel_chars,
+    &editor_el_steel_chars_ptr,                &num_editor_el_steel_chars
+  },
   {
     &setup.editor.el_custom,
     &setup.editor_cascade.el_ce,
@@ -4442,6 +4582,12 @@ editor_elements_info[] =
     &editor_hl_group_ptr,              &num_editor_hl_group,
     &editor_el_group_ptr,              &num_editor_el_group
   },
+  {
+    &setup.editor.el_custom,
+    &setup.editor_cascade.el_ref,
+    &editor_hl_reference_ptr,          &num_editor_hl_reference,
+    &editor_el_reference_ptr,          &num_editor_el_reference
+  },
   {
     &setup.editor.el_user_defined,
     &setup.editor_cascade.el_user,
@@ -4505,11 +4651,7 @@ static char *getElementInfoText(int element)
 {
   char *info_text = NULL;
 
-#if 1
   if (element < MAX_NUM_ELEMENTS)
-#else
-  if (element < NUM_FILE_ELEMENTS)
-#endif
   {
     if (strlen(element_info[element].description) > 0)
       info_text = element_info[element].description;
@@ -4525,6 +4667,32 @@ static char *getElementInfoText(int element)
   return info_text;
 }
 
+char *getElementDescriptionFilename(int element)
+{
+  char *docs_dir = options.docs_directory;
+  char *elements_subdir = "elements";
+  static char *filename = NULL;
+  char basename[MAX_FILENAME_LEN];
+
+  checked_free(filename);
+
+  /* 1st try: look for element description file for exactly this element */
+  sprintf(basename, "%s.txt", element_info[element].token_name);
+  filename = getPath3(docs_dir, elements_subdir, basename);
+  if (fileExists(filename))
+    return filename;
+
+  free(filename);
+
+  /* 2nd try: look for element description file for this element's class */
+  sprintf(basename, "%s.txt", element_info[element].class_name);
+  filename = getPath3(docs_dir, elements_subdir, basename);
+  if (fileExists(filename))
+    return filename;
+
+  return NULL;
+}
+
 static void InitDynamicEditorElementList(int **elements, int *num_elements)
 {
   boolean element_found[NUM_FILE_ELEMENTS];
@@ -4621,7 +4789,7 @@ static void ReinitializeElementList()
       if (element >= NUM_FILE_ELEMENTS)
        Error(ERR_WARN, "editor element %d is runtime element", element);
 
-      if (strcmp(getElementInfoText(element), INFOTEXT_UNKNOWN_ELEMENT) == 0)
+      if (strEqual(getElementInfoText(element), INFOTEXT_UNKNOWN_ELEMENT))
        Error(ERR_WARN, "no element description for element %d", element);
     }
   }
@@ -5204,8 +5372,11 @@ static void CreateCounterButtons()
        if (i == ED_COUNTER_ID_SELECT_LEVEL)
        {
          font_type = FONT_LEVEL_NUMBER;
+#if 1
+         font_type_active = FONT_LEVEL_NUMBER_ACTIVE;
+#else
          font_type_active = FONT_LEVEL_NUMBER;
-
+#endif
          x += 2 * ED_GADGET_DISTANCE;
          y -= ED_GADGET_DISTANCE;
 
@@ -5673,6 +5844,10 @@ static void CreateScrollbarGadgets()
                      GDI_SCROLLBAR_ITEMS_MAX, items_max,
                      GDI_SCROLLBAR_ITEMS_VISIBLE, items_visible,
                      GDI_SCROLLBAR_ITEM_POSITION, item_position,
+                     GDI_WHEEL_AREA_X, scrollbar_info[i].wheel_x,
+                     GDI_WHEEL_AREA_Y, scrollbar_info[i].wheel_y,
+                     GDI_WHEEL_AREA_WIDTH, scrollbar_info[i].wheel_width,
+                     GDI_WHEEL_AREA_HEIGHT, scrollbar_info[i].wheel_height,
                      GDI_STATE, GD_BUTTON_UNPRESSED,
                      GDI_DESIGN_UNPRESSED, gd_bitmap, gd_x1, gd_y1,
                      GDI_DESIGN_PRESSED, gd_bitmap, gd_x2, gd_y2,
@@ -5865,11 +6040,7 @@ static void MapCounterButtons(int id)
   int yoffset_above = MINI_TILEX + ED_GADGET_DISTANCE;
   int yoffset = ED_BORDER_SIZE;
   int x_left = gi_down->x - xoffset_left;
-#if 1
   int x_right; /* set after gadget position was modified */
-#else
-  int x_right = gi_up->x + gi_up->width + xoffset_right;
-#endif
   int y_above = gi_down->y - yoffset_above;
   int x = gi_down->x;
   int y;       /* set after gadget position was modified */
@@ -6370,75 +6541,8 @@ static void copy_custom_element_settings(int element_from, int element_to)
 {
   struct ElementInfo *ei_from = &element_info[element_from];
   struct ElementInfo *ei_to = &element_info[element_to];
-  int i, x, y;
-
-  /* ---------- copy element description ---------- */
-  for (i = 0; i < MAX_ELEMENT_NAME_LEN + 1; i++)
-    ei_to->description[i] = ei_from->description[i];
-
-  /* ---------- copy element base properties ---------- */
-#if 1
-  ei_to->properties[EP_BITFIELD_BASE] = ei_from->properties[EP_BITFIELD_BASE];
-#else
-  Properties[element_to][EP_BITFIELD_BASE] =
-    Properties[element_from][EP_BITFIELD_BASE];
-#endif
-
-  /* ---------- copy custom property values ---------- */
-
-  ei_to->use_gfx_element = ei_from->use_gfx_element;
-  ei_to->gfx_element = ei_from->gfx_element;
-
-  ei_to->access_direction = ei_from->access_direction;
-
-  ei_to->collect_score_initial = ei_from->collect_score_initial;
-  ei_to->collect_count_initial = ei_from->collect_count_initial;
-
-  ei_to->ce_value_fixed_initial = ei_from->ce_value_fixed_initial;
-  ei_to->ce_value_random_initial = ei_from->ce_value_random_initial;
-  ei_to->use_last_ce_value = ei_from->use_last_ce_value;
-
-  ei_to->push_delay_fixed = ei_from->push_delay_fixed;
-  ei_to->push_delay_random = ei_from->push_delay_random;
-  ei_to->drop_delay_fixed = ei_from->drop_delay_fixed;
-  ei_to->drop_delay_random = ei_from->drop_delay_random;
-  ei_to->move_delay_fixed = ei_from->move_delay_fixed;
-  ei_to->move_delay_random = ei_from->move_delay_random;
-
-  ei_to->move_pattern = ei_from->move_pattern;
-  ei_to->move_direction_initial = ei_from->move_direction_initial;
-  ei_to->move_stepsize = ei_from->move_stepsize;
-
-  ei_to->move_enter_element = ei_from->move_enter_element;
-  ei_to->move_leave_element = ei_from->move_leave_element;
-  ei_to->move_leave_type = ei_from->move_leave_type;
-
-  ei_to->slippery_type = ei_from->slippery_type;
-
-  for (y = 0; y < 3; y++)
-    for (x = 0; x < 3; x++)
-      ei_to->content.e[x][y] = ei_from->content.e[x][y];
-
-  ei_to->explosion_type = ei_from->explosion_type;
-  ei_to->explosion_delay = ei_from->explosion_delay;
-  ei_to->ignition_delay = ei_from->ignition_delay;
 
-  /* ---------- reinitialize and copy change pages ---------- */
-
-  ei_to->num_change_pages = ei_from->num_change_pages;
-  ei_to->current_change_page = ei_from->current_change_page;
-
-  setElementChangePages(ei_to, ei_to->num_change_pages);
-
-  for (i=0; i < ei_to->num_change_pages; i++)
-    ei_to->change_page[i] = ei_from->change_page[i];
-
-  /* ---------- copy group element info ---------- */
-  if (ei_from->group != NULL && ei_to->group != NULL)  /* group or internal */
-    *ei_to->group = *ei_from->group;
-
-  /* mark this custom element as modified */
-  ei_to->modified_settings = TRUE;
+  copyElementInfo(ei_from, ei_to);
 }
 
 static void replace_custom_element_in_settings(int element_from,
@@ -6665,7 +6769,10 @@ static void CopyCustomElementPropertiesToEditor(int element)
      HAS_CHANGE_EVENT(element, CE_BLOCKED) ? CE_BLOCKED :
      HAS_CHANGE_EVENT(element, CE_IMPACT) ? CE_IMPACT :
      HAS_CHANGE_EVENT(element, CE_SMASHED) ? CE_SMASHED :
+     HAS_CHANGE_EVENT(element, CE_VALUE_CHANGES) ? CE_VALUE_CHANGES :
+     HAS_CHANGE_EVENT(element, CE_SCORE_CHANGES) ? CE_SCORE_CHANGES :
      HAS_CHANGE_EVENT(element, CE_VALUE_GETS_ZERO) ? CE_VALUE_GETS_ZERO :
+     HAS_CHANGE_EVENT(element, CE_SCORE_GETS_ZERO) ? CE_SCORE_GETS_ZERO :
      custom_element_change.direct_action);
 
   /* set "change by other element action" selectbox help value */
@@ -6689,7 +6796,10 @@ static void CopyCustomElementPropertiesToEditor(int element)
      HAS_CHANGE_EVENT(element, CE_EXPLOSION_OF_X) ? CE_EXPLOSION_OF_X :
      HAS_CHANGE_EVENT(element, CE_MOVE_OF_X) ? CE_MOVE_OF_X :
      HAS_CHANGE_EVENT(element, CE_CREATION_OF_X) ? CE_CREATION_OF_X :
+     HAS_CHANGE_EVENT(element, CE_VALUE_CHANGES_OF_X) ? CE_VALUE_CHANGES_OF_X :
+     HAS_CHANGE_EVENT(element, CE_SCORE_CHANGES_OF_X) ? CE_SCORE_CHANGES_OF_X :
      HAS_CHANGE_EVENT(element, CE_VALUE_GETS_ZERO_OF_X) ? CE_VALUE_GETS_ZERO_OF_X :
+     HAS_CHANGE_EVENT(element, CE_SCORE_GETS_ZERO_OF_X) ? CE_SCORE_GETS_ZERO_OF_X :
      custom_element_change.other_action);
 }
 
@@ -6806,7 +6916,10 @@ static void CopyCustomElementPropertiesToGame(int element)
   custom_element_change_events[CE_BLOCKED] = FALSE;
   custom_element_change_events[CE_IMPACT] = FALSE;
   custom_element_change_events[CE_SMASHED] = FALSE;
+  custom_element_change_events[CE_VALUE_CHANGES] = FALSE;
+  custom_element_change_events[CE_SCORE_CHANGES] = FALSE;
   custom_element_change_events[CE_VALUE_GETS_ZERO] = FALSE;
+  custom_element_change_events[CE_SCORE_GETS_ZERO] = FALSE;
   custom_element_change_events[custom_element_change.direct_action] =
     custom_element_change_events[CE_BY_DIRECT_ACTION];
 
@@ -6830,7 +6943,10 @@ static void CopyCustomElementPropertiesToGame(int element)
   custom_element_change_events[CE_EXPLOSION_OF_X] = FALSE;
   custom_element_change_events[CE_MOVE_OF_X] = FALSE;
   custom_element_change_events[CE_CREATION_OF_X] = FALSE;
+  custom_element_change_events[CE_VALUE_CHANGES_OF_X] = FALSE;
+  custom_element_change_events[CE_SCORE_CHANGES_OF_X] = FALSE;
   custom_element_change_events[CE_VALUE_GETS_ZERO_OF_X] = FALSE;
+  custom_element_change_events[CE_SCORE_GETS_ZERO_OF_X] = FALSE;
   custom_element_change_events[custom_element_change.other_action] =
     custom_element_change_events[CE_BY_OTHER_ACTION];
 
@@ -6876,11 +6992,24 @@ static void CopyElementPropertiesToGame(int element)
     CopyClassicElementPropertiesToGame(element);
 }
 
+void CheckElementDescriptions()
+{
+  int i;
+
+  for (i = 0; i < NUM_FILE_ELEMENTS; i++)
+    if (getElementDescriptionFilename(i) == NULL && !IS_OBSOLETE(i))
+      Error(ERR_WARN, "no element description for element '%s'", EL_NAME(i));
+}
+
 void DrawLevelEd()
 {
   CloseDoor(DOOR_CLOSE_ALL);
   OpenDoor(DOOR_OPEN_2 | DOOR_NO_DELAY);
 
+#if DEBUG
+  CheckElementDescriptions();
+#endif
+
   if (level_editor_test_game)
   {
     CopyPlayfield(level.field, Feld);
@@ -6915,7 +7044,11 @@ void DrawLevelEd()
   ReinitializeElementList();           /* update dynamic level element list */
   ReinitializeElementListButtons();    /* custom element may look different */
 
+#if 1
+  UnmapAllGadgets();
+#else
   UnmapTapeButtons();
+#endif
   MapControlButtons();
 
   DrawEditModeWindow();
@@ -7395,7 +7528,7 @@ static void DrawEnvelopeTextArea(int envelope_nr)
   DrawBackground(gi->x, gi->y, gi->width, gi->height);
 
   if (envelope_nr != -1)
-    textarea_info[id].value = level.envelope_text[envelope_nr];
+    textarea_info[id].value = level.envelope[envelope_nr].text;
 
   ModifyGadget(gi, GDI_AREA_SIZE,
               *counterbutton_info[ED_COUNTER_ID_ENVELOPE_XSIZE].value,
@@ -7405,32 +7538,6 @@ static void DrawEnvelopeTextArea(int envelope_nr)
   MapTextAreaGadget(ED_TEXTAREA_ID_ENVELOPE_INFO);
 }
 
-char *getElementDescriptionFilename(int element)
-{
-  char *docs_dir = options.docs_directory;
-  char *elements_subdir = "elements";
-  static char *filename = NULL;
-  char basename[MAX_FILENAME_LEN];
-
-  checked_free(filename);
-
-  /* 1st try: look for element description file for exactly this element */
-  sprintf(basename, "%s.txt", element_info[element].token_name);
-  filename = getPath3(docs_dir, elements_subdir, basename);
-  if (fileExists(filename))
-    return filename;
-
-  free(filename);
-
-  /* 2nd try: look for element description file for this element's class */
-  sprintf(basename, "%s.txt", element_info[element].class_name);
-  filename = getPath3(docs_dir, elements_subdir, basename);
-  if (fileExists(filename))
-    return filename;
-
-  return NULL;
-}
-
 static boolean PrintInfoText(char *text, int font_nr, int start_line)
 {
   int font_height = getFontHeight(font_nr);
@@ -7460,23 +7567,27 @@ static int PrintElementDescriptionFromFile(char *filename, int start_line)
   int max_chars_per_line = (SXSIZE - 2 * pad_x) / font_width;
   int max_lines_per_screen = (SYSIZE - pad_y) / font_height - 1;
 
-  return DrawTextFromFile(sx, sy, filename, font_nr, max_chars_per_line,
-                         max_lines_per_screen);
+  return DrawTextFile(sx, sy, filename, font_nr, max_chars_per_line, -1,
+                     max_lines_per_screen, -1, TRUE, FALSE, FALSE);
 }
 
 static void DrawPropertiesTabulatorGadgets()
 {
-  struct GadgetInfo *gd_gi = level_editor_gadget[GADGET_ID_PROPERTIES_INFO];
-  struct GadgetDesign *gd = &gd_gi->alt_design[GD_BUTTON_UNPRESSED];
-  int gd_x = gd->x + gd_gi->border.width / 2;
-  int gd_y = gd->y + gd_gi->height - 1;
+  struct GadgetInfo *gd_gi1 = level_editor_gadget[GADGET_ID_PROPERTIES_INFO];
+  struct GadgetInfo *gd_gi4 = level_editor_gadget[GADGET_ID_PROPERTIES_CHANGE];
+  struct GadgetDesign *gd = &gd_gi1->alt_design[GD_BUTTON_UNPRESSED];
+  int gd_x = gd->x + gd_gi1->border.width / 2;
+  int gd_y = gd->y + gd_gi1->height - 1;
   Pixel tab_color = GetPixel(gd->bitmap, gd_x, gd_y);
   int id_first = ED_TEXTBUTTON_ID_PROPERTIES_INFO;
   int id_last  = ED_TEXTBUTTON_ID_PROPERTIES_CONFIG;
+#if 1
+#else
   int max_tabs = 4;
+#endif
   int i;
 
-  /* draw additional "advanced" tabulator for custom elements */
+  /* draw additional "change" tabulator for custom elements */
   if (IS_CUSTOM_ELEMENT(properties_element))
     id_last = ED_TEXTBUTTON_ID_PROPERTIES_CHANGE;
 
@@ -7492,21 +7603,29 @@ static void DrawPropertiesTabulatorGadgets()
       continue;
 
     /* draw background line below tabulator button */
-    ClearRectangleOnBackground(drawto, gi->x, gi->y + gi->height, gi->width,1);
+    ClearRectangleOnBackground(drawto, gi->x, gi->y + gi->height, gi->width, 1);
 
     /* draw solid line below inactive tabulator buttons */
     if (!active && tab_color != BLACK_PIXEL)   /* black => transparent */
-      FillRectangle(drawto, gi->x, gi->y + gi->height, gi->width,1, tab_color);
+      FillRectangle(drawto, gi->x, gi->y + gi->height, gi->width, 1, tab_color);
 
     ModifyGadget(gi, GDI_ACTIVE, active, GDI_END);
     MapTextbuttonGadget(i);
   }
 
+#if 1
   /* draw little border line below tabulator buttons */
   if (tab_color != BLACK_PIXEL)                        /* black => transparent */
-    FillRectangle(drawto, gd_gi->x, gd_gi->y + gd_gi->height + 1,
-                 max_tabs * gd_gi->width + (max_tabs -1) * ED_GADGET_DISTANCE,
+    FillRectangle(drawto, gd_gi1->x, gd_gi1->y + gd_gi1->height + 1,
+                 gd_gi4->x - gd_gi1->x + gd_gi4->width, ED_GADGET_DISTANCE,
+                 tab_color);
+#else
+  /* draw little border line below tabulator buttons */
+  if (tab_color != BLACK_PIXEL)                        /* black => transparent */
+    FillRectangle(drawto, gd_gi1->x, gd_gi1->y + gd_gi1->height + 1,
+                 max_tabs * gd_gi1->width + (max_tabs -1) * ED_GADGET_DISTANCE,
                  ED_GADGET_DISTANCE, tab_color);
+#endif
 }
 
 static void DrawPropertiesInfo()
@@ -7560,6 +7679,7 @@ static void DrawPropertiesInfo()
 
     /* pre-defined properties */
     { EP_CAN_PASS_MAGIC_WALL,  "- can pass magic walls"                },
+    { EP_CAN_PASS_DC_MAGIC_WALL,"- can pass magic walls (DC style)"    },
     { EP_SWITCHABLE,           "- can be switched"                     },
 #if 0
     { EP_HAS_EDITOR_CONTENT,   "- can contain other elements"          },
@@ -7582,20 +7702,12 @@ static void DrawPropertiesInfo()
   int screen_line = 0;
   int i, x, y;
 
-#if DEBUG
-  if (IS_CUSTOM_ELEMENT(properties_element))
+  if (setup.editor.show_element_token)
   {
     DrawTextF(pad_x, pad_y + screen_line++ * font2_height, FONT_TEXT_3,
-             "[Custom Element %d]", properties_element - EL_CUSTOM_START + 1);
+             "[%s]", element_info[properties_element].token_name);
     screen_line++;
   }
-  else if (IS_GROUP_ELEMENT(properties_element))
-  {
-    DrawTextF(pad_x, pad_y + screen_line++ * font2_height, FONT_TEXT_3,
-             "[Group Element %d]", properties_element - EL_GROUP_START + 1);
-    screen_line++;
-  }
-#endif
 
   /* ----- print number of elements / percentage of this element in level */
 
@@ -7735,10 +7847,12 @@ static struct
   { EL_EMC_DRIPPER,    &level.amoeba_speed,            TEXT_AMOEBA_SPEED },
   { EL_MAGIC_WALL,     &level.time_magic_wall,         TEXT_DURATION   },
   { EL_BD_MAGIC_WALL,  &level.time_magic_wall,         TEXT_DURATION   },
+  { EL_DC_MAGIC_WALL,  &level.time_magic_wall,         TEXT_DURATION   },
   { EL_ROBOT_WHEEL,    &level.time_wheel,              TEXT_DURATION   },
 
-#if 1
-  { EL_TIMEGATE_SWITCH,        &level.time_timegate,           TEXT_DURATION   },
+  { EL_TIMEGATE_SWITCH,          &level.time_timegate,         TEXT_DURATION   },
+  { EL_DC_TIMEGATE_SWITCH,&level.time_timegate,                TEXT_DURATION   },
+  { EL_LIGHT_SWITCH,   &level.time_light,              TEXT_DURATION   },
   { EL_LIGHT_SWITCH_ACTIVE, &level.time_light,         TEXT_DURATION   },
   { EL_SHIELD_NORMAL,  &level.shield_normal_time,      TEXT_DURATION   },
   { EL_SHIELD_DEADLY,  &level.shield_deadly_time,      TEXT_DURATION   },
@@ -7752,9 +7866,7 @@ static struct
   { EL_BIOMAZE,                &level.biomaze[1],              TEXT_GAME_OF_LIFE_2 },
   { EL_BIOMAZE,                &level.biomaze[2],              TEXT_GAME_OF_LIFE_3 },
   { EL_BIOMAZE,                &level.biomaze[3],              TEXT_GAME_OF_LIFE_4 },
-#endif
 
-#if 1
   { EL_EMC_ANDROID,    &level.android_move_time,       TEXT_MOVE_SPEED },
   { EL_EMC_ANDROID,    &level.android_clone_time,      TEXT_CLONE_SPEED },
   { EL_EMC_MAGIC_BALL, &level.ball_time,               TEXT_BALL_DELAY },
@@ -7763,7 +7875,6 @@ static struct
   { EL_SPRING,         &level.slurp_score,             TEXT_SLURPING   },
   { EL_EMC_LENSES,     &level.lenses_time,             TEXT_DURATION   },
   { EL_EMC_MAGNIFIER,  &level.magnify_time,            TEXT_DURATION   },
-#endif
 
   { -1,                        NULL,                           NULL            }
 };
@@ -7872,6 +7983,7 @@ static void DrawPropertiesConfig()
     int player_nr = GET_PLAYER_NR(properties_element);
 
     /* these properties can be set for every player individually */
+
     drawingarea_info[ED_DRAWING_ID_START_ELEMENT].value =
       &level.start_element[player_nr];
     drawingarea_info[ED_DRAWING_ID_ARTWORK_ELEMENT].value =
@@ -7879,13 +7991,17 @@ static void DrawPropertiesConfig()
     drawingarea_info[ED_DRAWING_ID_EXPLOSION_ELEMENT].value =
       &level.explosion_element[player_nr];
 
-    /* these properties can be set for every player individually */
     checkbutton_info[ED_CHECKBUTTON_ID_USE_START_ELEMENT].value =
       &level.use_start_element[player_nr];
     checkbutton_info[ED_CHECKBUTTON_ID_USE_ARTWORK_ELEMENT].value =
       &level.use_artwork_element[player_nr];
     checkbutton_info[ED_CHECKBUTTON_ID_USE_EXPLOSION_ELEMENT].value =
       &level.use_explosion_element[player_nr];
+    checkbutton_info[ED_CHECKBUTTON_ID_INITIAL_GRAVITY].value =
+      &level.initial_player_gravity[player_nr];
+
+    selectbox_info[ED_SELECTBOX_ID_PLAYER_SPEED].value =
+      &level.initial_player_stepsize[player_nr];
 
     MapCheckbuttonGadget(ED_CHECKBUTTON_ID_CAN_FALL_INTO_ACID);
     MapCheckbuttonGadget(properties_element == EL_SP_MURPHY ?
@@ -7897,6 +8013,7 @@ static void DrawPropertiesConfig()
     MapCheckbuttonGadget(ED_CHECKBUTTON_ID_USE_START_ELEMENT);
     MapCheckbuttonGadget(ED_CHECKBUTTON_ID_USE_ARTWORK_ELEMENT);
     MapCheckbuttonGadget(ED_CHECKBUTTON_ID_USE_EXPLOSION_ELEMENT);
+    MapCheckbuttonGadget(ED_CHECKBUTTON_ID_INITIAL_GRAVITY);
     MapCheckbuttonGadget(ED_CHECKBUTTON_ID_CAN_PASS_TO_WALKABLE);
 
     MapDrawingArea(ED_DRAWING_ID_START_ELEMENT);
@@ -7933,11 +8050,6 @@ static void DrawPropertiesConfig()
   if (properties_element == EL_TIME_ORB_FULL)
     MapCheckbuttonGadget(ED_CHECKBUTTON_ID_USE_TIME_ORB_BUG);
 
-#if 0
-  if (properties_element == EL_BALLOON)
-    MapSelectboxGadget(ED_SELECTBOX_ID_WIND_DIRECTION);
-#endif
-
   if (CAN_GROW(properties_element))
   {
     checkbutton_info[ED_CHECKBUTTON_ID_GROW_INTO_DIGGABLE].y =
@@ -7950,14 +8062,23 @@ static void DrawPropertiesConfig()
   {
     int counter1_id = ED_COUNTER_ID_ENVELOPE_XSIZE;
     int counter2_id = ED_COUNTER_ID_ENVELOPE_YSIZE;
+    int button1_id = ED_CHECKBUTTON_ID_ENVELOPE_AUTOWRAP;
+    int button2_id = ED_CHECKBUTTON_ID_ENVELOPE_CENTERED;
     int envelope_nr = properties_element - EL_ENVELOPE_1;
 
-    counterbutton_info[counter1_id].value = &level.envelope_xsize[envelope_nr];
-    counterbutton_info[counter2_id].value = &level.envelope_ysize[envelope_nr];
+    counterbutton_info[counter1_id].value = &level.envelope[envelope_nr].xsize;
+    counterbutton_info[counter2_id].value = &level.envelope[envelope_nr].ysize;
+
+    checkbutton_info[button1_id].value = &level.envelope[envelope_nr].autowrap;
+    checkbutton_info[button2_id].value = &level.envelope[envelope_nr].centered;
 
     /* display counter to choose size of envelope text area */
-    MapCounterButtons(ED_COUNTER_ID_ENVELOPE_XSIZE);
-    MapCounterButtons(ED_COUNTER_ID_ENVELOPE_YSIZE);
+    MapCounterButtons(counter1_id);
+    MapCounterButtons(counter2_id);
+
+    /* display checkbuttons to choose auto-wrap and alignment properties */
+    MapCheckbuttonGadget(button1_id);
+    MapCheckbuttonGadget(button2_id);
 
     DrawEnvelopeTextArea(envelope_nr);
   }
@@ -8133,123 +8254,678 @@ static void DrawEditorElementName(int x, int y, int element)
     {
       int i;
 
-      for (i = max_chars_per_line - 1; i >= 0; i--)
-       if (buffer[i] == ' ')
-         break;
+      for (i = max_chars_per_line - 1; i >= 0; i--)
+       if (buffer[i] == ' ')
+         break;
+
+      if (strlen(&element_name[i + 1]) <= max_chars_per_line)
+      {
+       buffer[i] = '\0';
+       next_pos = i + 1;
+      }
+    }
+
+    DrawTextS(x, y - font_height / 2, font_nr, buffer);
+
+    strncpy(buffer, &element_name[next_pos], max_chars_per_line);
+    buffer[max_chars_per_line] = '\0';
+
+    DrawTextS(x, y + font_height / 2, font_nr, buffer);
+  }
+}
+
+static void DrawPropertiesWindow()
+{
+  int xstart = 2;
+  int ystart = 4;
+
+  stick_element_properties_window = FALSE;
+
+  /* make sure that previous properties edit mode exists for this element */
+  if (edit_mode_properties > ED_MODE_PROPERTIES_CONFIG &&
+      !IS_CUSTOM_ELEMENT(properties_element))
+    edit_mode_properties = ED_MODE_PROPERTIES_CONFIG;
+
+  if (edit_mode_properties == ED_MODE_PROPERTIES_CONFIG &&
+      IS_CUSTOM_ELEMENT(properties_element))
+    edit_mode_properties = ED_MODE_PROPERTIES_CONFIG_1;
+
+  CopyElementPropertiesToEditor(properties_element);
+
+  UnmapLevelEditorWindowGadgets();
+  UnmapLevelEditorToolboxDrawingGadgets();
+  UnmapLevelEditorToolboxCustomGadgets();
+
+  if (IS_CUSTOM_ELEMENT(properties_element) ||
+      IS_GROUP_ELEMENT(properties_element))
+    MapLevelEditorToolboxCustomGadgets();
+
+  SetMainBackgroundImage(IMG_BACKGROUND_EDITOR);
+  ClearWindow();
+
+#if 0
+  DrawTextSCentered(ED_SETTINGS1_YPOS, FONT_TITLE_1, "Element Settings");
+#else
+  DrawText(SX + ED_SETTINGS2_XPOS, SY + ED_SETTINGS1_YPOS,
+          "Element Settings", FONT_TITLE_1);
+#endif
+
+  FrameCounter = 0;    /* restart animation frame counter */
+
+  DrawElementBorder(SX + xstart * MINI_TILEX,
+                   SY + ystart * MINI_TILEY + MINI_TILEY / 2,
+                   TILEX, TILEY, FALSE);
+
+  DrawEditorElementAnimation(SX + xstart * MINI_TILEX,
+                            SY + ystart * MINI_TILEY + MINI_TILEY / 2);
+
+  DrawEditorElementName((xstart + 3) * MINI_TILEX + 1,
+                       (ystart + 1) * MINI_TILEY + 1,
+                       properties_element);
+
+  DrawPropertiesTabulatorGadgets();
+
+  if (edit_mode_properties == ED_MODE_PROPERTIES_INFO)
+    DrawPropertiesInfo();
+  else if (edit_mode_properties == ED_MODE_PROPERTIES_CHANGE)
+    DrawPropertiesChange();
+  else /* (edit_mode_properties == ED_MODE_PROPERTIES_CONFIG[_1|_2]) */
+    DrawPropertiesConfig();
+}
+
+static void UpdateCustomElementGraphicGadgets()
+{
+  int i;
+
+  ModifyEditorElementList();
+  RedrawDrawingElements();
+
+  /* force redraw of all mapped drawing area gadgets */
+  for (i = 0; i < ED_NUM_DRAWING_AREAS; i++)
+  {
+    struct GadgetInfo *gi = level_editor_gadget[drawingarea_info[i].gadget_id];
+
+    if (gi->mapped)
+      MapDrawingArea(i);
+  }
+}
+
+static int getDirectionFromTube(int element)
+{
+  switch (element)
+  {
+    case EL_TUBE_LEFT_UP:              return (MV_LEFT | MV_UP);
+    case EL_TUBE_LEFT_DOWN:            return (MV_LEFT | MV_DOWN);
+    case EL_TUBE_RIGHT_UP:             return (MV_RIGHT | MV_UP);
+    case EL_TUBE_RIGHT_DOWN:           return (MV_RIGHT | MV_DOWN);
+    case EL_TUBE_HORIZONTAL:           return (MV_HORIZONTAL);
+    case EL_TUBE_HORIZONTAL_UP:                return (MV_HORIZONTAL | MV_UP);
+    case EL_TUBE_HORIZONTAL_DOWN:      return (MV_HORIZONTAL | MV_DOWN);
+    case EL_TUBE_VERTICAL:             return (MV_VERTICAL);
+    case EL_TUBE_VERTICAL_LEFT:                return (MV_VERTICAL | MV_LEFT);
+    case EL_TUBE_VERTICAL_RIGHT:       return (MV_VERTICAL | MV_RIGHT);
+    case EL_TUBE_ANY:                  return (MV_ANY_DIRECTION);
+  }
+
+  return MV_NONE;
+}
+
+static int getTubeFromDirection(int direction)
+{
+  switch (direction)
+  {
+    case (MV_LEFT | MV_UP):            return EL_TUBE_LEFT_UP;
+    case (MV_LEFT | MV_DOWN):          return EL_TUBE_LEFT_DOWN;
+    case (MV_RIGHT | MV_UP):           return EL_TUBE_RIGHT_UP;
+    case (MV_RIGHT | MV_DOWN):         return EL_TUBE_RIGHT_DOWN;
+    case (MV_HORIZONTAL):              return EL_TUBE_HORIZONTAL;
+    case (MV_HORIZONTAL | MV_UP):      return EL_TUBE_HORIZONTAL_UP;
+    case (MV_HORIZONTAL | MV_DOWN):    return EL_TUBE_HORIZONTAL_DOWN;
+    case (MV_VERTICAL):                        return EL_TUBE_VERTICAL;
+    case (MV_VERTICAL | MV_LEFT):      return EL_TUBE_VERTICAL_LEFT;
+    case (MV_VERTICAL | MV_RIGHT):     return EL_TUBE_VERTICAL_RIGHT;
+    case (MV_ANY_DIRECTION):           return EL_TUBE_ANY;
+
+    /* if only one direction, fall back to simple tube with that direction */
+    case (MV_LEFT):                    return EL_TUBE_HORIZONTAL;
+    case (MV_RIGHT):                   return EL_TUBE_HORIZONTAL;
+    case (MV_UP):                      return EL_TUBE_VERTICAL;
+    case (MV_DOWN):                    return EL_TUBE_VERTICAL;
+  }
+
+  return EL_EMPTY;
+}
+
+static int getTubeFromDirectionNotEmpty(int direction, int element_old)
+{
+  int element_new = getTubeFromDirection(direction);
+
+  return (element_new != EL_EMPTY ? element_new : element_old);
+}
+
+static int getOpenDirectionFromBelt(int element)
+{
+  int belt_dir = getBeltDirFromBeltElement(element);
+
+  return (belt_dir == MV_LEFT ? MV_RIGHT :
+         belt_dir == MV_RIGHT ? MV_LEFT :
+         belt_dir == MV_NONE ? MV_HORIZONTAL : belt_dir);
+}
+
+static int getBeltFromNrAndOpenDirection(int nr, int direction)
+{
+  int belt_dir = (direction == MV_LEFT ? MV_RIGHT :
+                 direction == MV_RIGHT ? MV_LEFT :
+                 direction == MV_HORIZONTAL ? MV_NONE : direction);
+
+  return getBeltElementFromBeltNrAndBeltDir(nr, belt_dir);
+}
+
+static int getClosedTube(int x, int y)
+{
+  static int xy[4][2] =
+  {
+    { -1, 0 },
+    { +1, 0 },
+    { 0, -1 },
+    { 0, +1 }
+  };
+  int element_old = IntelliDrawBuffer[x][y];
+  int tube_direction_old = getDirectionFromTube(element_old);
+  int tube_direction_new = MV_NONE;
+  int i;
+
+  for (i = 0; i < NUM_DIRECTIONS; i++)
+  {
+    int xx = x + xy[i][0];
+    int yy = y + xy[i][1];
+    int dir = MV_DIR_FROM_BIT(i);
+    int dir_opposite = MV_DIR_OPPOSITE(dir);
+
+    if (IN_LEV_FIELD(xx, yy) && IS_TUBE(IntelliDrawBuffer[xx][yy]) &&
+       (tube_direction_old & dir) &&
+       (getDirectionFromTube(IntelliDrawBuffer[xx][yy]) & dir_opposite))
+      tube_direction_new |= dir;
+  }
+
+  return getTubeFromDirectionNotEmpty(tube_direction_new, element_old);
+}
+
+static int getClosedBelt(int x, int y)
+{
+  static int xy[2][2] =
+  {
+    { -1, 0 },
+    { +1, 0 },
+  };
+  int element_old = IntelliDrawBuffer[x][y];
+  int belt_nr = getBeltNrFromBeltElement(element_old);
+  int belt_direction_old = getOpenDirectionFromBelt(element_old);
+  int belt_direction_new = MV_NONE;
+  int i;
+
+  for (i = 0; i < 2; i++)
+  {
+    int xx = x + xy[i][0];
+    int yy = y + xy[i][1];
+    int dir = MV_DIR_FROM_BIT(i);
+    int dir_opposite = MV_DIR_OPPOSITE(dir);
+
+    if (IN_LEV_FIELD(xx, yy) && IS_BELT(IntelliDrawBuffer[xx][yy]) &&
+       (belt_direction_old & dir) &&
+       (getOpenDirectionFromBelt(IntelliDrawBuffer[xx][yy]) & dir_opposite))
+      belt_direction_new |= dir;
+  }
+
+  return getBeltFromNrAndOpenDirection(belt_nr, belt_direction_new);
+}
+
+static void SetElementSimple(int x, int y, int element, boolean change_level)
+{
+  if (change_level)
+    Feld[x][y] = element;
+
+  IntelliDrawBuffer[x][y] = element;
+
+  if (IN_ED_FIELD(x - level_xpos, y - level_ypos))
+    DrawMiniElement(x - level_xpos, y - level_ypos, element);
+}
+
+static void SetElementIntelliDraw(int x, int y, int new_element,
+                                 boolean change_level)
+{
+  static int last_x = -1;
+  static int last_y = -1;
+  int old_element = IntelliDrawBuffer[x][y];
+
+  if (new_element == EL_UNDEFINED)
+  {
+    last_x = -1;
+    last_y = -1;
+
+    return;
+  }
+
+  if (IS_TUBE(new_element))
+  {
+    static int xy[4][2] =
+    {
+      { -1, 0 },
+      { +1, 0 },
+      { 0, -1 },
+      { 0, +1 }
+    };
+    boolean last_element_is_neighbour = FALSE;
+    int last_element_new;
+    int direction = MV_NONE;
+    int i;
+
+    /* if existing element is tube, keep all existing tube directions */
+    if (IS_TUBE(old_element))
+      direction |= getDirectionFromTube(old_element);
+
+    for (i = 0; i < NUM_DIRECTIONS; i++)
+    {
+      int xx = x + xy[i][0];
+      int yy = y + xy[i][1];
+
+      if (last_x == xx && last_y == yy && IN_LEV_FIELD(last_x, last_y) &&
+         IS_TUBE(IntelliDrawBuffer[last_x][last_y]))
+      {
+       int dir = MV_DIR_FROM_BIT(i);
+       int dir_opposite = MV_DIR_OPPOSITE(dir);
+       int last_element_old = IntelliDrawBuffer[last_x][last_y];
+       int last_direction_old = getDirectionFromTube(last_element_old);
+       int last_direction_new = last_direction_old | dir_opposite;
+
+       last_element_new = getTubeFromDirection(last_direction_new);
+       last_element_is_neighbour = TRUE;
+
+       direction |= dir;
+      }
+    }
+
+    new_element = getTubeFromDirectionNotEmpty(direction, new_element);
+
+    /* reduce connections of neighbour tube elements to minimal connections */
+    if (last_element_is_neighbour)
+    {
+      /* set neighbour tube elements to newly determined tube connections */
+      SetElementSimple(x, y, new_element, change_level);
+      SetElementSimple(last_x, last_y, last_element_new, change_level);
+
+      /* remove all open tube connections of neighbour tube elements */
+      new_element = getClosedTube(x, y);
+      last_element_new = getClosedTube(last_x, last_y);
+
+      /* set neighbour tube elements to new, minimized tube connections */
+      SetElementSimple(x, y, new_element, change_level);
+      SetElementSimple(last_x, last_y, last_element_new, change_level);
+    }
+  }
+  else if (IS_ACID_POOL(new_element))
+  {
+    int last_element_new = EL_UNDEFINED;
+
+    if (IS_ACID_POOL(old_element))
+    {
+      new_element = old_element;
+    }
+
+    if (last_x == x - 1 && last_y == y && IN_LEV_FIELD(last_x, last_y) &&
+       IS_ACID_POOL(IntelliDrawBuffer[last_x][last_y]))
+    {
+      if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPLEFT)
+      {
+       new_element = EL_ACID_POOL_TOPRIGHT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPRIGHT)
+      {
+       last_element_new = EL_ACID;
+       new_element = EL_ACID_POOL_TOPRIGHT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMLEFT)
+      {
+       new_element = EL_ACID_POOL_BOTTOMRIGHT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMRIGHT)
+      {
+       last_element_new = EL_ACID_POOL_BOTTOM;
+       new_element = EL_ACID_POOL_BOTTOMRIGHT;
+      }
+    }
+    else if (last_x == x + 1 && last_y == y && IN_LEV_FIELD(last_x, last_y) &&
+            IS_ACID_POOL(IntelliDrawBuffer[last_x][last_y]))
+    {
+      if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPLEFT)
+      {
+       last_element_new = EL_ACID;
+       new_element = EL_ACID_POOL_TOPLEFT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPRIGHT)
+      {
+       new_element = EL_ACID_POOL_TOPLEFT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMLEFT)
+      {
+       last_element_new = EL_ACID_POOL_BOTTOM;
+       new_element = EL_ACID_POOL_BOTTOMLEFT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMRIGHT)
+      {
+       new_element = EL_ACID_POOL_BOTTOMLEFT;
+      }
+    }
+    else if (last_x == x && last_y == y - 1 && IN_LEV_FIELD(last_x, last_y) &&
+            IS_ACID_POOL(IntelliDrawBuffer[last_x][last_y]))
+    {
+      if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPLEFT)
+      {
+       new_element = EL_ACID_POOL_BOTTOMLEFT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPRIGHT)
+      {
+       new_element = EL_ACID_POOL_BOTTOMRIGHT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMLEFT)
+      {
+       last_element_new = EL_ACID_POOL_TOPLEFT;
+       new_element = EL_ACID_POOL_BOTTOMLEFT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMRIGHT)
+      {
+       last_element_new = EL_ACID_POOL_TOPRIGHT;
+       new_element = EL_ACID_POOL_BOTTOMRIGHT;
+      }
+      else
+      {
+       last_element_new = EL_ACID;
+       new_element = EL_ACID_POOL_BOTTOM;
+      }
+    }
+    else if (last_x == x && last_y == y + 1 && IN_LEV_FIELD(last_x, last_y) &&
+            IS_ACID_POOL(IntelliDrawBuffer[last_x][last_y]))
+    {
+      if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPLEFT)
+      {
+       new_element = EL_ACID_POOL_TOPLEFT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPRIGHT)
+      {
+       new_element = EL_ACID_POOL_TOPRIGHT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMLEFT)
+      {
+       new_element = EL_ACID_POOL_TOPLEFT;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMRIGHT)
+      {
+       new_element = EL_ACID_POOL_TOPRIGHT;
+      }
+      else
+      {
+       last_element_new = EL_ACID;
+       new_element = EL_ACID;
+      }
+    }
+
+    if (last_element_new != EL_UNDEFINED)
+      SetElementSimple(last_x, last_y, last_element_new, change_level);
+  }
+  else if (IS_BELT(new_element))
+  {
+    int last_element_new = EL_UNDEFINED;
+    int belt_nr = getBeltNrFromBeltElement(new_element);
+#if 0
+    int belt_left   = getBeltElementFromBeltNrAndBeltDir(belt_nr, MV_LEFT);
+#endif
+    int belt_middle = getBeltElementFromBeltNrAndBeltDir(belt_nr, MV_NONE);
+#if 0
+    int belt_right  = getBeltElementFromBeltNrAndBeltDir(belt_nr, MV_RIGHT);
+#endif
+    boolean last_element_is_neighbour = FALSE;
+
+#if 0
+    if (IS_BELT(old_element))
+    {
+      new_element = old_element;
+    }
+#endif
+
+    if (last_x == x - 1 && last_y == y && IN_LEV_FIELD(last_x, last_y) &&
+       IS_BELT(IntelliDrawBuffer[last_x][last_y]))
+    {
+      last_element_new = IntelliDrawBuffer[last_x][last_y];
 
-      if (strlen(&element_name[i + 1]) <= max_chars_per_line)
+#if 1
+      last_element_new = belt_middle;
+      new_element = belt_middle;
+#else
+      if (IntelliDrawBuffer[last_x][last_y] == belt_left)
       {
-       buffer[i] = '\0';
-       next_pos = i + 1;
+       new_element = belt_right;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == belt_right)
+      {
+       last_element_new = belt_middle;
+       new_element = belt_right;
       }
+#endif
+
+      last_element_is_neighbour = TRUE;
     }
+    else if (last_x == x + 1 && last_y == y && IN_LEV_FIELD(last_x, last_y) &&
+            IS_BELT(IntelliDrawBuffer[last_x][last_y]))
+    {
+      last_element_new = IntelliDrawBuffer[last_x][last_y];
 
-    DrawTextS(x, y - font_height / 2, font_nr, buffer);
+#if 1
+      last_element_new = belt_middle;
+      new_element = belt_middle;
+#else
+      if (IntelliDrawBuffer[last_x][last_y] == belt_left)
+      {
+       last_element_new = belt_middle;
+       new_element = belt_left;
+      }
+      else if (IntelliDrawBuffer[last_x][last_y] == belt_right)
+      {
+       new_element = belt_left;
+      }
+#endif
 
-    strncpy(buffer, &element_name[next_pos], max_chars_per_line);
-    buffer[max_chars_per_line] = '\0';
+      last_element_is_neighbour = TRUE;
+    }
 
-    DrawTextS(x, y + font_height / 2, font_nr, buffer);
-  }
-}
+    if (last_element_new != EL_UNDEFINED)
+      SetElementSimple(last_x, last_y, last_element_new, change_level);
 
-static void DrawPropertiesWindow()
-{
-  int xstart = 2;
-  int ystart = 4;
+    /* reduce connections of neighbour belt elements to minimal connections */
+    if (last_element_is_neighbour)
+    {
+      /* set neighbour belt elements to newly determined belt connections */
+      SetElementSimple(x, y, new_element, change_level);
+      SetElementSimple(last_x, last_y, last_element_new, change_level);
 
-  stick_element_properties_window = FALSE;
+      /* remove all open belt connections of neighbour belt elements */
+      new_element = getClosedBelt(x, y);
+      last_element_new = getClosedBelt(last_x, last_y);
 
-  /* make sure that previous properties edit mode exists for this element */
-  if (edit_mode_properties > ED_MODE_PROPERTIES_CONFIG &&
-      !IS_CUSTOM_ELEMENT(properties_element))
-    edit_mode_properties = ED_MODE_PROPERTIES_CONFIG;
+      /* set neighbour belt elements to new, minimized belt connections */
+      SetElementSimple(x, y, new_element, change_level);
+      SetElementSimple(last_x, last_y, last_element_new, change_level);
+    }
+  }
+  else if (new_element == EL_EMC_WALL_1 ||
+          new_element == EL_EMC_WALL_2 ||
+          new_element == EL_EMC_WALL_3)
+  {
+    int last_element_new = EL_UNDEFINED;
 
-  if (edit_mode_properties == ED_MODE_PROPERTIES_CONFIG &&
-      IS_CUSTOM_ELEMENT(properties_element))
-    edit_mode_properties = ED_MODE_PROPERTIES_CONFIG_1;
+    if (last_x == x && last_y == y - 1 && IN_LEV_FIELD(last_x, last_y) &&
+       (IntelliDrawBuffer[last_x][last_y] == EL_EMC_WALL_1 ||
+        IntelliDrawBuffer[last_x][last_y] == EL_EMC_WALL_2 ||
+        IntelliDrawBuffer[last_x][last_y] == EL_EMC_WALL_3))
+    {
+      if (IN_LEV_FIELD(last_x, last_y - 1))
+      {
+       if (IntelliDrawBuffer[last_x][last_y - 1] != EL_EMC_WALL_1 &&
+           IntelliDrawBuffer[last_x][last_y - 1] != EL_EMC_WALL_2)
+         last_element_new = EL_EMC_WALL_1;
+       else if (IntelliDrawBuffer[last_x][last_y - 1] == EL_EMC_WALL_1 ||
+                IntelliDrawBuffer[last_x][last_y - 1] == EL_EMC_WALL_2)
+         last_element_new = EL_EMC_WALL_2;
+      }
 
-  CopyElementPropertiesToEditor(properties_element);
+      new_element = EL_EMC_WALL_3;
+    }
+    else if (last_x == x && last_y == y + 1 && IN_LEV_FIELD(last_x, last_y) &&
+            (IntelliDrawBuffer[last_x][last_y] == EL_EMC_WALL_1 ||
+             IntelliDrawBuffer[last_x][last_y] == EL_EMC_WALL_2 ||
+             IntelliDrawBuffer[last_x][last_y] == EL_EMC_WALL_3))
+    {
+      if (IN_LEV_FIELD(last_x, last_y + 1))
+      {
+       if (IntelliDrawBuffer[last_x][last_y + 1] != EL_EMC_WALL_2 &&
+           IntelliDrawBuffer[last_x][last_y + 1] != EL_EMC_WALL_3)
+         last_element_new = EL_EMC_WALL_3;
+       else if (IntelliDrawBuffer[last_x][last_y + 1] == EL_EMC_WALL_2 ||
+                IntelliDrawBuffer[last_x][last_y + 1] == EL_EMC_WALL_3)
+         last_element_new = EL_EMC_WALL_2;
+      }
 
-  UnmapLevelEditorWindowGadgets();
-  UnmapLevelEditorToolboxDrawingGadgets();
-  UnmapLevelEditorToolboxCustomGadgets();
+      new_element = EL_EMC_WALL_1;
+    }
 
-  if (IS_CUSTOM_ELEMENT(properties_element) ||
-      IS_GROUP_ELEMENT(properties_element))
-    MapLevelEditorToolboxCustomGadgets();
+    if (last_element_new != EL_UNDEFINED)
+      SetElementSimple(last_x, last_y, last_element_new, change_level);
+  }
+  else if (IS_BELT_SWITCH(old_element))
+  {
+    int belt_nr = getBeltNrFromBeltSwitchElement(old_element);
+    int belt_dir = getBeltDirFromBeltSwitchElement(old_element);
 
-  SetMainBackgroundImage(IMG_BACKGROUND_EDITOR);
-  ClearWindow();
+    belt_dir = (belt_dir == MV_LEFT ? MV_NONE :
+               belt_dir == MV_NONE ? MV_RIGHT : MV_LEFT);
 
-#if 0
-  DrawTextSCentered(ED_SETTINGS1_YPOS, FONT_TITLE_1, "Element Settings");
-#else
-  DrawText(SX + ED_SETTINGS2_XPOS, SY + ED_SETTINGS1_YPOS,
-          "Element Settings", FONT_TITLE_1);
-#endif
+    new_element = getBeltSwitchElementFromBeltNrAndBeltDir(belt_nr, belt_dir);
+  }
+  else
+  {
+    static int swappable_elements[][2] =
+    {
+      { EL_EXIT_CLOSED,                        EL_EXIT_OPEN                    },
+      { EL_DYNAMITE,                   EL_DYNAMITE_ACTIVE              },
+      { EL_EM_DYNAMITE,                        EL_EM_DYNAMITE_ACTIVE           },
+      { EL_QUICKSAND_EMPTY,            EL_QUICKSAND_FULL               },
+      { EL_EMERALD,                    EL_WALL_EMERALD                 },
+      { EL_EMERALD_YELLOW,             EL_WALL_EMERALD_YELLOW          },
+      { EL_EMERALD_RED,                        EL_WALL_EMERALD_RED             },
+      { EL_EMERALD_PURPLE,             EL_WALL_EMERALD_PURPLE          },
+      { EL_DIAMOND,                    EL_WALL_DIAMOND                 },
+      { EL_BD_DIAMOND,                 EL_WALL_BD_DIAMOND              },
+      { EL_GATE_1,                     EL_GATE_1_GRAY                  },
+      { EL_GATE_2,                     EL_GATE_2_GRAY                  },
+      { EL_GATE_3,                     EL_GATE_3_GRAY                  },
+      { EL_GATE_4,                     EL_GATE_4_GRAY                  },
+      { EL_EM_GATE_1,                  EL_EM_GATE_1_GRAY               },
+      { EL_EM_GATE_2,                  EL_EM_GATE_2_GRAY               },
+      { EL_EM_GATE_3,                  EL_EM_GATE_3_GRAY               },
+      { EL_EM_GATE_4,                  EL_EM_GATE_4_GRAY               },
+      { EL_EMC_GATE_5,                 EL_EMC_GATE_5_GRAY              },
+      { EL_EMC_GATE_6,                 EL_EMC_GATE_6_GRAY              },
+      { EL_EMC_GATE_7,                 EL_EMC_GATE_7_GRAY              },
+      { EL_EMC_GATE_8,                 EL_EMC_GATE_8_GRAY              },
+      { EL_DC_GATE_WHITE,              EL_DC_GATE_WHITE_GRAY           },
+      { EL_TIME_ORB_EMPTY,             EL_TIME_ORB_FULL                },
+      { EL_LAMP,                       EL_LAMP_ACTIVE                  },
+      { EL_SOKOBAN_FIELD_EMPTY,                EL_SOKOBAN_FIELD_FULL           },
+      { EL_SP_BASE,                    EL_SP_BUGGY_BASE                },
+      { EL_PEARL,                      EL_WALL_PEARL                   },
+      { EL_CRYSTAL,                    EL_WALL_CRYSTAL                 },
+      { EL_TIMEGATE_CLOSED,            EL_TIMEGATE_OPEN                },
+      { EL_SWITCHGATE_CLOSED,          EL_SWITCHGATE_OPEN              },
+      { EL_SWITCHGATE_SWITCH_UP,       EL_SWITCHGATE_SWITCH_DOWN       },
+      { EL_DC_SWITCHGATE_SWITCH_UP,    EL_DC_SWITCHGATE_SWITCH_DOWN    },
+      { EL_LIGHT_SWITCH,               EL_LIGHT_SWITCH_ACTIVE          },
+      { EL_LANDMINE,                   EL_DC_LANDMINE                  },
+      { EL_SHIELD_NORMAL,              EL_SHIELD_DEADLY                },
+      { EL_STEEL_EXIT_CLOSED,          EL_STEEL_EXIT_OPEN              },
+      { EL_EM_EXIT_CLOSED,             EL_EM_EXIT_OPEN                 },
+      { EL_EM_STEEL_EXIT_CLOSED,       EL_EM_STEEL_EXIT_OPEN           },
+      { EL_QUICKSAND_FAST_EMPTY,       EL_QUICKSAND_FAST_FULL          },
+
+      { -1,                            -1                              },
+    };
+    int i;
+
+    for (i = 0; swappable_elements[i][0] != -1; i++)
+    {
+      int element1 = swappable_elements[i][0];
+      int element2 = swappable_elements[i][1];
 
-#if 1
-  FrameCounter = 0;    /* restart animation frame counter */
-#endif
+      if (old_element == element1 || old_element == element2)
+       new_element = (old_element == element1 ? element2 : element1);
+    }
+  }
 
-  DrawElementBorder(SX + xstart * MINI_TILEX,
-                   SY + ystart * MINI_TILEY + MINI_TILEY / 2,
-                   TILEX, TILEY, FALSE);
-#if 1
-  DrawEditorElementAnimation(SX + xstart * MINI_TILEX,
-                            SY + ystart * MINI_TILEY + MINI_TILEY / 2);
-#else
-  DrawGraphicAnimationExt(drawto,
-                         SX + xstart * MINI_TILEX,
-                         SY + ystart * MINI_TILEY + MINI_TILEY / 2,
-                         el2img(properties_element), -1, NO_MASKING);
-#endif
+  SetElementSimple(x, y, new_element, change_level);
 
-#if 0
-  FrameCounter = 0;    /* restart animation frame counter */
-#endif
+  last_x = x;
+  last_y = y;
+}
 
-  DrawEditorElementName((xstart + 3) * MINI_TILEX + 1,
-                       (ystart + 1) * MINI_TILEY + 1,
-                       properties_element);
+static void ResetIntelliDraw()
+{
+  int x, y;
 
-  DrawPropertiesTabulatorGadgets();
+  for (x = 0; x < lev_fieldx; x++)
+    for (y = 0; y < lev_fieldy; y++)
+      IntelliDrawBuffer[x][y] = Feld[x][y];
 
-  if (edit_mode_properties == ED_MODE_PROPERTIES_INFO)
-    DrawPropertiesInfo();
-  else if (edit_mode_properties == ED_MODE_PROPERTIES_CHANGE)
-    DrawPropertiesChange();
-  else /* (edit_mode_properties == ED_MODE_PROPERTIES_CONFIG[_1|_2]) */
-    DrawPropertiesConfig();
+  SetElementIntelliDraw(-1, -1, EL_UNDEFINED, FALSE);
 }
 
-static void UpdateCustomElementGraphicGadgets()
+static void SetElementExt(int x, int y, int element, boolean change_level)
 {
-  int i;
-
-  ModifyEditorElementList();
-  RedrawDrawingElements();
-
-  /* force redraw of all mapped drawing area gadgets */
-  for (i = 0; i < ED_NUM_DRAWING_AREAS; i++)
+  if (element < 0)
   {
-    struct GadgetInfo *gi = level_editor_gadget[drawingarea_info[i].gadget_id];
+    element = IntelliDrawBuffer[x][y] = Feld[x][y];
+    SetElementSimple(x, y, element, change_level);
 
-    if (gi->mapped)
-      MapDrawingArea(i);
+    return;
   }
+
+  if (GetKeyModState() & KMOD_Shift)
+    SetElementIntelliDraw(x, y, element, change_level);
+  else
+    SetElementSimple(x, y, element, change_level);
+}
+
+static void SetElement(int x, int y, int element)
+{
+  SetElementExt(x, y, element, TRUE);
 }
 
 static void DrawLineElement(int sx, int sy, int element, boolean change_level)
 {
+#if 1
+  int lx = sx + level_xpos;
+  int ly = sy + level_ypos;
+
+  SetElementExt(lx, ly, element, change_level);
+
+#else
+
   int lx = sx + level_xpos;
   int ly = sy + level_ypos;
+  int element_new = (element < 0 ? Feld[lx][ly] : element);
 
-  DrawMiniElement(sx, sy, (element < 0 ? Feld[lx][ly] : element));
+  DrawMiniElement(sx, sy, element_new);
 
   if (change_level)
     Feld[lx][ly] = element;
+#endif
 }
 
 static void DrawLine(int from_x, int from_y, int to_x, int to_y,
@@ -8513,7 +9189,7 @@ static void CopyBrushExt(int from_x, int from_y, int to_x, int to_y,
 
     for (y = 0; y < brush_height; y++)
     {
-      for (x=0; x < brush_width; x++)
+      for (x = 0; x < brush_width; x++)
       {
        brush_buffer[x][y] = Feld[from_lx + x][from_ly + y];
 
@@ -8618,33 +9294,7 @@ void DumpBrush_Small()
 
 static void FloodFill(int from_x, int from_y, int fill_element)
 {
-  int i,x,y;
-  int old_element;
-  static int check[4][2] = { {-1,0}, {0,-1}, {1,0}, {0,1} };
-  static int safety = 0;
-
-  /* check if starting field still has the desired content */
-  if (Feld[from_x][from_y] == fill_element)
-    return;
-
-  safety++;
-
-  if (safety > lev_fieldx*lev_fieldy)
-    Error(ERR_EXIT, "Something went wrong in 'FloodFill()'. Please debug.");
-
-  old_element = Feld[from_x][from_y];
-  Feld[from_x][from_y] = fill_element;
-
-  for (i = 0; i < 4; i++)
-  {
-    x = from_x + check[i][0];
-    y = from_y + check[i][1];
-
-    if (IN_LEV_FIELD(x,y) && Feld[x][y] == old_element)
-      FloodFill(x, y, fill_element);
-  }
-
-  safety--;
+  FloodFillLevel(from_x, from_y, fill_element, Feld, lev_fieldx, lev_fieldy);
 }
 
 /* values for DrawLevelText() modes */
@@ -8774,11 +9424,20 @@ static void SetTextCursor(int unused_sx, int unused_sy, int sx, int sy,
     DrawAreaBorder(sx, sy, sx, sy);
 }
 
+static void CheckLevelBorderElement(boolean redraw_playfield)
+{
+  int last_border_element = BorderElement;
+
+  SetBorderElement();
+
+  if (redraw_playfield && BorderElement != last_border_element)
+    DrawMiniLevel(ed_fieldx, ed_fieldy, level_xpos, level_ypos);
+}
+
 static void CopyLevelToUndoBuffer(int mode)
 {
   static boolean accumulated_undo = FALSE;
   boolean new_undo_buffer_position = TRUE;
-  int last_border_element;
   int x, y;
 
   switch (mode)
@@ -8811,10 +9470,7 @@ static void CopyLevelToUndoBuffer(int mode)
       UndoBuffer[undo_buffer_position][x][y] = Feld[x][y];
 
   /* check if drawing operation forces change of border style */
-  last_border_element = BorderElement;
-  SetBorderElement();
-  if (BorderElement != last_border_element)
-    DrawMiniLevel(ed_fieldx, ed_fieldy, level_xpos, level_ypos);
+  CheckLevelBorderElement(TRUE);
 
   level.changed = TRUE;
 }
@@ -8945,10 +9601,8 @@ static void HandleDrawingAreas(struct GadgetInfo *gi)
   if (!started_inside_drawing_area)
     return;
 
-#if 1
   if (!IS_VALID_BUTTON(button))
     return;
-#endif
 
   if (!button && !button_release_event)
     return;
@@ -8965,6 +9619,12 @@ static void HandleDrawingAreas(struct GadgetInfo *gi)
     actual_drawing_function = GADGET_ID_PICK_ELEMENT;
   }
 
+  if (GetKeyModState() & KMOD_Shift)
+  {
+    if (button_press_event || button_release_event)
+      ResetIntelliDraw();
+  }
+
   switch (actual_drawing_function)
   {
     case GADGET_ID_SINGLE_ITEMS:
@@ -8977,17 +9637,27 @@ static void HandleDrawingAreas(struct GadgetInfo *gi)
          if (edit_mode == ED_MODE_DRAWING && draw_with_brush &&
              !inside_drawing_area)
            DeleteBrushFromCursor();
+
+#if 0
+         ResetIntelliDraw();
+#endif
        }
 
-       if (!button)
+       if (!button || button_release_event)
          break;
 
        if (draw_with_brush)
        {
+#if 0
          if (!button_release_event)
+#endif
            CopyBrushToLevel(sx, sy, button);
        }
+#if 1
+       else
+#else
        else if (new_element != Feld[lx][ly])
+#endif
        {
          if (new_element == EL_PLAYER_1)
          {
@@ -8998,18 +9668,30 @@ static void HandleDrawingAreas(struct GadgetInfo *gi)
              {
                if (Feld[x][y] == EL_PLAYER_1)
                {
+#if 1
+                 SetElement(x, y, EL_EMPTY);
+#else
                  Feld[x][y] = EL_EMPTY;
+#if 1
+                 if (IN_ED_FIELD(x - level_xpos, y - level_ypos))
+                   DrawMiniElement(x - level_xpos, y - level_ypos, EL_EMPTY);
+#else
                  if (x - level_xpos >= 0 && x - level_xpos < ed_fieldx &&
                      y - level_ypos >= 0 && y - level_ypos < ed_fieldy)
-                   DrawMiniElement(x - level_xpos, y - level_ypos,
-                                   EL_EMPTY);
+                   DrawMiniElement(x - level_xpos, y - level_ypos, EL_EMPTY);
+#endif
+#endif
                }
              }
            }
          }
 
+#if 1
+         SetElement(lx, ly, new_element);
+#else
          Feld[lx][ly] = new_element;
          DrawMiniElement(sx, sy, new_element);
+#endif
        }
       }
       else
@@ -9260,7 +9942,14 @@ static void HandleTextAreaGadgets(struct GadgetInfo *gi)
 {
   int type_id = gi->custom_type_id;
 
+#if 1
+  strncpy(textarea_info[type_id].value, gi->textarea.value,
+         MAX_ENVELOPE_TEXT_LEN);
+  textarea_info[type_id].value[MAX_ENVELOPE_TEXT_LEN] = '\0';
+#else
+  /* !!! BUGGY !!! MAX_ENVELOPE_TEXT_LEN != MAX_GADGET_TEXTSIZE !!! */
   strcpy(textarea_info[type_id].value, gi->textarea.value);
+#endif
 
   level.changed = TRUE;
 }
@@ -9289,14 +9978,7 @@ static void HandleSelectboxGadgets(struct GadgetInfo *gi)
     {
       /* when changing action type, also check action mode and action arg */
       if (value_old != value_new)
-      {
-#if 1
        setSelectboxSpecialActionVariablesIfNeeded();
-#else
-       custom_element_change.action_mode = -1;
-       custom_element_change.action_arg = -1;
-#endif
-      }
 
       DrawPropertiesChange();
     }
@@ -9469,14 +10151,6 @@ static void HandleControlButtons(struct GadgetInfo *gi)
   int new_element = BUTTON_ELEMENT(button);
   int x, y;
 
-#if 0
-  /* MAKES PROBLEMS WITH ELEMENT LIST SCROLLBAR AND IS PROBABLY NOT NEEDED */
-  /* !!! CHECK WHAT HAPPENS WHEN MOUSE WHEEL IS USED OVER ELEMENT LIST !!! */
-
-  if (!IS_VALID_BUTTON(button))
-    return;
-#endif
-
   if (edit_mode == ED_MODE_DRAWING && drawing_function == GADGET_ID_TEXT)
     DrawLevelText(0, 0, 0, TEXT_END);
 
@@ -9700,7 +10374,12 @@ static void HandleControlButtons(struct GadgetInfo *gi)
       for (x = 0; x < lev_fieldx; x++)
        for (y = 0; y < lev_fieldy; y++)
          Feld[x][y] = UndoBuffer[undo_buffer_position][x][y];
-      DrawMiniLevel(ed_fieldx, ed_fieldy, level_xpos,level_ypos);
+
+      /* check if undo operation forces change of border style */
+      CheckLevelBorderElement(FALSE);
+
+      DrawMiniLevel(ed_fieldx, ed_fieldy, level_xpos, level_ypos);
+
       break;
 
     case GADGET_ID_INFO:
@@ -9894,7 +10573,9 @@ void HandleLevelEditorKeyInput(Key key)
   }
   else if (button_status == MB_RELEASED)
   {
-    int i, id = GADGET_ID_NONE;
+    int id = GADGET_ID_NONE;
+    int new_element_shift = element_shift;
+    int i;
 
     switch (key)
     {
@@ -9932,6 +10613,39 @@ void HandleLevelEditorKeyInput(Key key)
 
        break;
 
+      case KSYM_Insert:
+      case KSYM_Delete:
+
+       /* this is needed to prevent interference with running "True X-Mouse" */
+       if (GetKeyModStateFromEvents() & KMOD_Control)
+         break;
+
+       /* check for last or next editor cascade block in element list */
+       for (i = 0; i < num_editor_elements; i++)
+       {
+         if ((key == KSYM_Insert && i == element_shift) ||
+             (key == KSYM_Delete && new_element_shift > element_shift))
+           break;
+
+         /* jump to next cascade block (or to start of element list) */
+         if (i == 0 || IS_EDITOR_CASCADE(editor_elements[i]))
+           new_element_shift = i;
+       }
+
+       if (i < num_editor_elements)
+         element_shift = new_element_shift;
+
+       if (element_shift > num_editor_elements - ED_NUM_ELEMENTLIST_BUTTONS)
+         element_shift = num_editor_elements - ED_NUM_ELEMENTLIST_BUTTONS;
+
+       ModifyGadget(level_editor_gadget[GADGET_ID_SCROLL_LIST_VERTICAL],
+                    GDI_SCROLLBAR_ITEM_POSITION,
+                    element_shift / ED_ELEMENTLIST_BUTTONS_HORIZ, GDI_END);
+
+       ModifyEditorElementList();
+
+       break;
+
       case KSYM_Escape:
         if (edit_mode == ED_MODE_DRAWING)
        {
@@ -9950,6 +10664,7 @@ void HandleLevelEditorKeyInput(Key key)
          DrawDrawingWindow();
          edit_mode = ED_MODE_DRAWING;
        }
+
         break;
 
       default:
@@ -9982,15 +10697,8 @@ void HandleLevelEditorIdle()
   if (!DelayReached(&action_delay, action_delay_value))
     return;
 
-#if 1
   DrawEditorElementAnimation(SX + xpos * TILEX,
                             SY + ypos * TILEY + MINI_TILEY / 2);
-#else
-  DrawGraphicAnimationExt(drawto,
-                         SX + xpos * TILEX,
-                         SY + ypos * TILEY + MINI_TILEY / 2,
-                         el2img(properties_element), -1, NO_MASKING);
-#endif
 
   MarkTileDirty(xpos, ypos);
   MarkTileDirty(xpos, ypos + 1);
@@ -10042,11 +10750,6 @@ void PrintEditorGadgetInfoText(struct GadgetInfo *gi)
 void HandleEditorGadgetInfoText(void *ptr)
 {
   struct GadgetInfo *gi = (struct GadgetInfo *)ptr;
-#if 0
-  char infotext[MAX_OUTPUT_LINESIZE + 1];
-  char shortcut[MAX_OUTPUT_LINESIZE + 1];
-  int max_infotext_len = getMaxInfoTextLength();
-#endif
 
   if (game_status != GAME_MODE_EDITOR)
     return;
@@ -10060,38 +10763,7 @@ void HandleEditorGadgetInfoText(void *ptr)
   if (edit_mode == ED_MODE_DRAWING && draw_with_brush)
     DeleteBrushFromCursor();
 
-#if 1
   PrintEditorGadgetInfoText(gi);
-#else
-  if (gi == NULL || gi->info_text == NULL)
-    return;
-
-  strncpy(infotext, gi->info_text, max_infotext_len);
-  infotext[max_infotext_len] = '\0';
-
-  if (gi->custom_id < ED_NUM_CTRL_BUTTONS)
-  {
-    int key = control_info[gi->custom_id].shortcut;
-
-    if (key)
-    {
-      if (gi->custom_id == GADGET_ID_SINGLE_ITEMS)     /* special case 1 */
-       sprintf(shortcut, " ('.' or '%c')", key);
-      else if (gi->custom_id == GADGET_ID_PICK_ELEMENT)        /* special case 2 */
-       sprintf(shortcut, " ('%c' or 'Ctrl')", key);
-      else if (gi->custom_id == GADGET_ID_TEST)                /* special case 3 */
-       sprintf(shortcut, " ('Enter' or 'Shift-%c')", key);
-      else                                             /* normal case */
-       sprintf(shortcut, " ('%s%c')",
-               (key >= 'A' && key <= 'Z' ? "Shift-" : ""), key);
-
-      if (strlen(infotext) + strlen(shortcut) <= max_infotext_len)
-       strcat(infotext, shortcut);
-    }
-  }
-
-  DrawText(INFOTEXT_XPOS, INFOTEXT_YPOS, infotext, FONT_TEXT_2);
-#endif
 }
 
 static void HandleDrawingAreaInfo(struct GadgetInfo *gi)
@@ -10255,12 +10927,8 @@ void RequestExitLevelEditor(boolean ask_if_level_has_changed)
       Request("Level has changed ! Exit without saving ?",
              REQ_ASK | REQ_STAY_OPEN))
   {
-#if 1
     CloseDoor(DOOR_CLOSE_1);
     SetDoorState(DOOR_CLOSE_2);
-#else
-    CloseDoor(DOOR_CLOSE_ALL);
-#endif
     game_status = GAME_MODE_MAIN;
     DrawMainMenu();
   }