9.2

• Choose Overprint to cause overprinting for object and background colors with an Auto
Amount specified in the Trap Specifications dialog box (Edit > Colors > Edit Trap), as
well as for items with an Auto Amount (+) or (–) specified in the Trap Information palette
(Window > Trap Information).
Enter a trapping value in the Indeterminate field or choose Overprint:
• Enter a value in the Indeterminate field to control the amount of trapping that
QuarkXPress applies to object colors that are in front of indeterminate backgrounds
(multiple colors with conflicting trapping relationships).
• Choose Overprint to cause an object color to overprint an indeterminate background.
Enter a Knockout Limit value. The knockout limit is the value (expressed as a percentage
of darkness of the object color) that enables you to control the point at which an object
color knocks out a background color.
Enter an Overprint Limit value. Overprint limit is a trapping setting that allows an object
set to overprint to trap according to the Auto Amount value if the object's shade is less
than a particular percentage.
Preferences — Color Manager
The Color Manager pane (Administration > Preferences > Renderer > Color Manager)
includes the following controls.
To specify an engine for color transformation, choose an option from the Color Engine
drop-down menu.
To achieve the darkest possible blacks in all output methods, check Black Point
Compensation.
Use the Source Setup drop-down menu to specify the source color space of pictures and
colors used in the application.
To enable the Profile Information command in the Window menu and the Color
Management tab in the Import Picture dialog box, check Enable Access to Picture
Profiles. This option allows you to view information about profiles.
To specify a default proof output setup, choose an option from the Proof Output drop-down
menu.
To specify a rendering intent for soft proofing, choose an option from the Rendering
Intent drop-down list. Perceptual scales all the colors in the source gamut so that they
all fit within the destination gamut. Relative Colorimetric retains colors that are in both
the source gamut and the destination gamut. The only source colors that are changed are
those that are not within the destination gamut. Saturation considers the saturation of
source colors and changes them to colors with the same relative saturation in the
destination gamut. Absolute Colorimetric retains colors that are in both the source gamut
and the destination gamut. Colors that are outside the destination gamut are adjusted in
A GUIDE TO QUARKXPRESS SERVER 9.2 | 27
THE QUARKXPRESS SERVER USER INTERFACE