When you add an image sequence or multi-state button to a Presentation layout, QuarkXPress uses Composition Zones technology to place a copy of the target Image Sequence layout or Button layout into a box in your Presentation layout.

Like all composition layouts, Image Sequence layouts and Button layouts are synchronized with their corresponding boxes in the Presentation layout. Consequently, any Image Sequence layouts or Button layouts you have used are displayed in the Shared Content palette, and animations and buttons have the distinctive box handles that identify synchronized items.

You can use Composition Zones to embed an Interactive layout in a Web layout, and then export the Web layout to create an HTML page with an embedded SWF presentation.