In the Layers palette, Ctrl+click the “eye” icon next to a layer.
This will hide all of the other layers you have been working on instantly, leaving just the layer you have selected.
If you Ctrl+click the Lock icon, this will ensure that all layers, except that one, are locked.
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.