----------------- Part 8 - Section 1 ----------------- 

Code Sample 8.1.1

"
datablock t2dSceneObjectDatablock(FishDatablock) {
   Class = "FishClass";
   Layer = "16";
   WorldLimitMode = "NULL";
   WorldLimitMin = "-66.2102 -45";
   WorldLimitMax = "66.1003 45";
   WorldLimitCallback = "1";
      minSpeed = "5";
      maxSpeed = "25";
};
"