Adobe ACROBAT 3D Manual page 608

Using trap presets to specify trap settings
A trap preset is a collection of trap settings you can apply to a page or range of pages in
an Adobe PDF document. The Trap Presets dialog box provides a simple interface for
entering trap settings and saving a collection of settings as a trap preset. You can apply
trap presets to any or all pages in the current document. If you don't apply a trap preset to
a trapping page range, that page range will use the [Default] trap preset. The [Default]
preset is a collection of typical trap settings that are applied to all pages of a new
document by default. To assign a different preset, or to use no preset, see
preset to pages.
Note: In Acrobat, trap presets and their assignments apply to the document only while it is
open; trap settings are not saved in the PDF file. This is different from InDesign, where
trap presets and their assignments are saved with the InDesign document.
Use the New Trap Preset dialog box to specify trap settings for new or existing presets
(including the [Default] trap preset) or to delete trap presets.
To create or modify a trap preset:
1. Choose Tools > Print Production > Trap Presets.
2. Do one of the following:
Select an existing preset as a starting point, and then click Create.
Double-click a preset to edit it.
3. Specify the following options, and then click OK:
For Name, type a name for the preset. You can't change the name of the [No Trap Preset]
and [Default] trap preset.
For Trap Width, type values to specify the amount of overlap for inks. (See
widths.)
For Trap Appearance, specify options for controlling the shape of the traps. (See
trap appearance.)
For Images, specify settings that determine how to trap imported bitmap images. (See
Trapping imported
For Trap Thresholds, type values to specify the conditions under which trapping occurs.
Many variables affect the values you'll need to enter here. For more information, consult
with your prepress service provider, and see the other trapping topics.
To delete a trap preset:
1. In the Trap Presets dialog box, select the preset(s), and then click the Delete button.
2. If prompted to replace a trap preset, choose one in the Delete Trap Preset dialog box that
appears. This dialog box appears if at least one of the selected presets has been assigned to
a page.
3. Click OK to confirm the deletion.
Note: You cannot delete either of the two built-in presets: [No Trap Preset] and [Default].
images.)
Assigning a trap
Setting trap
Setting