8.5

Trap Specifications
Click Edit Trap in the Default Colors dialog box (Server/QuarkXPress Server > Document
Controls > Colors) to display the Trap Specifications dialog box for a chosen color. Use
the Trap Specifications dialog box to specify trapping values for any object color relative
to any background color. By specifying Overprint, Knockout, Auto Amount (+) for
spreads, Auto Amount (–) for chokes, or Custom trap values in the Trap drop-down
menu, you can control the trapping relationships for every color except White and
Registration.
Trap Specifications dialog box
Color-specific trapping values you specify in the Trap Specifications dialog box directly
affect color relationships and override all default trapping preferences.
A spread occurs when items with a lighter color enlarge slightly to overlap a darker
background color. A choke occurs when items with a darker color are trapped by a slight
reduction in the size of the "knocked out" area in a lighter background color.
The Background Color column displays all the colors defined for the project, with the
exception of White, Registration, and the object color. When the object color is placed
against a background of more than one color with which the object color has conflicting
trapping relationships or against a color QuarkXPress is unable to identify, the program
traps according to the value specified for the Indeterminate background color.
The Trap drop-down menu determines the trapping relationship when the selected
Background Color occurs behind the object color selected in the Default Colors dialog
box. The Trap column displays the current setting. Entries different from the default values
are marked with an asterisk (*).
42 | A GUIDE TO QUARKXPRESS SERVER 8.5
THE QUARKXPRESS SERVER USER INTERFACE