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I found that if I do not put a background() call in the first line of draw, when I make a moving circle it makes a trail. Now, I thought this was very cool but I don't have much control over it. I may be asking the wrong question (please tell me if I am), but if I want to have more control over the trail I have to make it my self, this would mean I need to draw a circle at the x and y (which are changing variables) of the main circle and not have it move, but that means infinite variables or infinite circles (I think). I guess what I mean by my question is can I make a circle at x and y variables and in the next frame make another circle through the same ellipse call while not moving or deleting the first extra circle and so on so forth.