The variable 'squares' refers to the number of grid squares you want to set the size of the original shape. In this case the side of the original square can be from 1 to 6. (Any higher is too large for the stage and distorts the rotation). To see what I mean, click 'See inside' and click the backdrops logo (far right, under the stage). The black backdrop is the current one but the 20 pixel grid backdrop is the first backdrop. Click it and see for yourself, what is the meaning of the 'squares' variable.
