In QuarkXPress, you can view pictures in full resolution by selecting them one at a time and either choosing Item> Preview Resolution> Full Resolution or right-clicking the picture and selecting Preview Resolution> Full Resolution from the contextual menu that appears.
Unfortunately there is no way to create full-resolution previews for all of the pictures in a document at one time. There is, however, a way to turn them all off to increase performance: View> Hide Full Res Previews.
Another performance tip: if you open a lot of QuarkXPress documents, or have documents that have lots of pictures, you may want to increase the maximum size of the Cache folder in QuarkXPress’s Preferences.
Jay Nelson is the editorial director of PlanetQuark.com, and the editor and publisher of Design Tools Monthly. He’s also the author of the QuarkXPress 8 and QuarkXPress 7 training titles at Lynda.com, as well as the training videos Quark includes in the box with QuarkXPress 7 . In addition, Jay writes regularly for Macworld and Photoshop User magazines and speaks at industry events.