Just start it. It's a simple example of how to use a list to animate. You can use the arrow keys to offset the position of the box, but as soon as you let go of an arrow key the sprite will jump to the next position in the list, depending on how long it was interrupted. By default it goes to the next position every .25 seconds.
The box moves according to the order of the items in the xPos and yPos lists. To get the sprite x,y positions for the lists I moved the box to the upper left corner of the grid and used arrow keys to move the box 70 pixels at a time (the width and height of the box). I then had the x,y position of the sprite written to the xPos, yPos lists when I clicked the sprite. Then I just moved the sprite to the position I wanted and stored the x,y numbers with a click. It sounds more complicated to do that it actually was. This could have been done automatically too.
