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As we know, graphics that you create inside of Illustrator can go virtually anywhere, especially on mobile devices for example. Now, older type mobile devices don't necessarily have support for full color images. So a file type called Wireless Bitmap was created to support those devices. If you need to, you can export artwork for those devices directly from Illustrator. Let's take a look at how to do that. I'm going to go to the File menu and choose Save for Web & Devices. And using my Slice Select tool, I'm just going to click on this slice right here and then from the pop-up over here, file formats, I'm going to choose WBMP or Wireless Bitmap.
Now, as we discuss before, the Wireless Bitmap format only supports black-and-white. In fact, you can even have any levels of gray. So what Illustrator does is that it uses dithering patterns to simulate the appearance of gray artwork. Now, you can see over here I have a pop -up to choose between different types of dithering, either Diffusion, Pattern, Noise, or I can actually choose No Dither at all. Now, remember this format is specifically for older devices that don't have color screens. Chances are you may never have to worry about creating Wireless Bitmap images, but if you ever do get such a request, you'll know exactly where to find it and how to create them.
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