Many of the terms in InDesign CS4 menus, dialog boxes, and panels are identical to and have the same meanings as terms used in QuarkXPress. For example, words like page, book, library, kerning, leading, horizontal scale, group/ungroup, lock/unlock, and pasteboard have essentially the same meaning in both programs. In some cases, the two programs use different terms for the same thing. Once you understand the difference in terms, you’re likely to find that associated concepts are quite similar. Here are some key terms that differ between QuarkXPress and InDesign