In most programs, black type always overprints colored objects behind it. If you ever want the type to *not* overprint, define a 99% black and use it for your type.
It will still print totally black, but you can assign this color any trapping value you’d like.
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.