Adobe Acrobat 8 3D - Manual (Page 488)

481 ADOBE ACROBAT 3D VERSION 8
User Guide
Note: Transparency flattening cannot be undone after the file is saved.
Overlapping art is divided when flattened.
For more information on transparency output issues, see the Print Resource Center on the Adobe website .
Flattener Preview dialog box overview
Use the preview options in the Flattener Preview dialog box to highlight the areas and objects that are transparent,
as well as those affected by transparency flattening. Transparent content is highlighted in red, and the rest of the
artwork appears in grayscale.
You can use this information to adjust the flattener options before you apply the settings, and then save them as
flattener presets. You can then apply these presets from other dialog boxes in the application, including PDF
Optimizer, the Advanced Print Setup dialog box, and the Settings dialog box for Save As PostScript.