I have to say, I was pretty surprised by the Thomson Handbook's statement that capturing screenshots can be difficult and even time-consuming. While I can't speak for PCs (although Google informs me that you simply have to press the 'Print Screen' key), I can tell you that Mac has a some great key shortcuts that make it easy to catch anything on your screen and turn it into an image file. For any Mac users in the class, here are the shortcuts:
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