sites and paper don't mix all that well. Web sites are dynamic, linkable, animated, and completely unconstrained by space. Paper is well, paper. And when you try to print a Web site on it, bad things can and often do happen. Sometimes a seemingly brief article translates to a dozen sheets of paper. Other times, the printed version is too difficult to read because it's surrounded by silly ads that have lost their animated vigor and are no longer clickable. Designing content for the screen just isn't the same as designing it for paper. To bridge the gap, many Web sites offer special print-friendly versions of their content that are more amenable to the paper format. These versions typically remove surrounding ads, enlarge text size, remove background colors and images, and format the content into columns to deliver a more magazine-like experience. Web sites offer print-friendly formats in different ways. Some link to a separate page from the original article, so you must click through to the page and print that one instead. Increasingly, however, Web sites are taking advantage of a new browser feature that allows them to specify a print format that automatically takes effect when you print the original article. In other words, you don't need to look for a special option - it just works. A good rule is to use Print Preview to see how a particular Web site will look on paper. If you don't like what you see, examine the Web site to see whether it links to a print-friendly version.           Using Print Preview How many times have you printed an interesting page only to discover that something was, shall we say, lost in translation? Maybe parts of an image are missing. Worse, maybe parts of the story are missing. This kind of thing happens frequently because many Web designers concentrate on designing the best possible on-screen experience. Because the screen and a sheet of paper have completely different dimensions, this focus often comes at the expense of the printed page. Now you just have a piece of paper to throw away. You can use Print Preview to view a Web page as it will print before you print it and avoid wasting paper (and time). To open the Print Preview window (shown in Figure 12-1), navigate to the Web page you want to print, and choose File Print Preview. Firefox offers a variety of correctional features you can use to improve the print layout if you don't like the preview. I discuss these in the following sections. Figure 12-1: The Print Preview window. Warning Macintoshes do not have the Print Preview feature. Furthermore, the Mac version of Firefox uses the default Page Setup and Print windows, but extends the Print window to offer Firefox-specific features. Most of the special formatting features discussed in this chapter, such as margin customization, are found in the Print window on the Mac. Changing the scale of the page If a Web site is too wide to fit comfortably on paper (like the one in Figure 12-2), you can scale the page smaller, which is kind of like zooming out on a page for printing purposes. When you print wide pages, Firefox automatically wraps text so that it doesn't get cut off. However, wrapping text can add many