anchor.diff:    begin
       // Add mobs
       IsBoss := False;
  -    for I := 0 to 255 do
  +    for I := 0 to High(Byte) do
         Mobs.AddGroup(Z);
     end;
   end;
  
positive.code:     X, Y: Byte;
    begin
      repeat
        X := Math.RandomRange(10, High(Byte) - 10);
        Y := Math.RandomRange(10, High(Byte) - 10);
      until (GetTileEnum(X, Y, ADeep) = ABaseTileEnum);
      AddSpot(X, Y, Math.RandomRange(49, High(Byte)), ADeep, ABaseTileEnum,
        ATileEnum);
  
negative.code:     for I := 0 to C do
      begin
        repeat
          X := Math.RandomRange(Pd, High(Byte) - Pd);
          Y := Math.RandomRange(Pd, High(Byte) - Pd);
        until (GetTileEnum(X, Y, pred(Z)) = teDefaultFloor);
        Self.AddTiles(X, Y, Z, D, V, teDefaultWall, teDefaultFloor);
        SetTileEnum(X, Y, pred(Z), teDnStairs);
  