Help with cloud tutorial

Can someone explain how to make the loop that is explained on step two of http://www.ayatoweb.com/ae_tips_e/ae46_e.html# . I dont know what they mean by, “Divide the layer” and when i view the picture they have of the time line, it looks like they just copied the layer and then tweened the above animation to fade in. If someone could please explain how to make the animation loop i would very much appreciate it. Thanks

Mike

look at the timeline screenshot of that part (right under where it says ‘divide the layer’) - I think you’ll get what he meant…

i dont… do you???

Well my guess as in the screenshot is to duplicate the fractal layer, take the top one and drag the beginning of clip cursor to the middle of the movie