anchor.diff:    TERRA_Utils,
     TERRA_Object,
     TERRA_OS,
  +  TERRA_Engine,
     TERRA_PNG,
     TERRA_Sprite,
     TERRA_FileManager,
  
positive.code: Procedure Demo.OnCreate;
  Var
    I:Integer;
    Img:Image;
    It:ImageIterator;
  
    U, V:Single;
  
negative.code: 
  uses
    TERRA_Application,
    TERRA_GraphicsManager,
    TERRA_Viewport,
    TERRA_DemoApplication,
  