Quark today announced the release of QuarkXClusive, a new XTensions module for QuarkXPress 6 that offers powerful variable data publishing capabilities. The free module, which is currently only available for Mac OS X, lets businesses output customized, database-driven documents on HP Indigo digital presses. “QuarkXClusive makes on-demand custom printing efficient because it allows personalized printing without putting excessive demands on the RIP,” said Jürgen Kurz, senior vice president of product development at Quark. “This gives Quark and HP customers the flexibility to print high-volume jobs with personalized content.”