The Twirl filter does precisely what its name suggests: It spins an image. You can control the amount of spin with the slider within the dialog box. This is a great filter for creating special effects. So far, I haven't found very many subtle uses for the Twirl filter, but if you can, go to it. It creates wonderful, kaleidoscopic effects and can also simulate a swirling drain. It looks great with the chains, as shown in Figure 17.11.

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