[racket] what does warp-pointer do?

At Mon, 05 Sep 2011 16:34:14 +0200, Marijn wrote:
> in the docs[1] the canvas-method warp-pointer is described as moving
> the cursor to the given location. What is this cursor/pointer that is
> mentioned? Is this supposed to aid relative drawing (doesn't seem so)
> or is it supposed to change the keyboard- or mouse-focus? Or something
> else entirely?

It's supposed to move the "cursor" or "mouse pointer" that the user
normally moves with the mouse (and so it's usually a bad idea to call
that method).