User Guide

Chapter 3: Objects And Attributes
trapping applied to the circle, the circle expands slightly to overlap, or trap into, the circle
knockout in the dark background.
Trapping limitations
Whenever possible, design illustrations to avoid certain trapping problems, and always discuss
trapping with your service bureau and printer to avoid unnecessary expense and inferior results.
In Canvas, trapping is best applied to vector objects that use a solid pen stroke and solid pen ink
color. The following limitations apply to trapping:
Canvas will not create a choke trap for text.
Canvas will not create a choke trap for a vector object that has no stroke or has a stroke that
is not a solid pen stroke.
Canvas will not create a choke trap for an object that has a gradient pen ink.
Canvas will not create a spread trap for a paint object.
To specify trapping for objects:
1. Select the object you want to trap. In most cases, this will be a foreground object that
touches a highly contrasting color.
2. Click the Trap tab.
3. Select the Trap Object check box, and then click the Choke or Spread radio button (see
"Trapping choices" on page 202).
4. Click Apply to set the trapping option for the selected object. No change is apparent in the
object on screen, because the trap is created only when you print color separations.
To apply trapping to selected text:
You can apply trapping options to text that you select within a text object using the Overprint and
Spread options in the Text | Style menu.
To adjust the trap size:
Before printing color separations, specify the trap size. Select the Separations options in the Print
dialog box to change the trap size value.
Creating attribute styles
Illustrators and designers may often find themselves applying the same attributes to various vector
objects within a layout. An attribute style is a set of attributes that you save and then apply to other
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