MACROMEDIA FREEHAND 10-USING FREEHAND Use Manual page 406

Note:
Knockout (left) and Overprint (right)
You can overprint ink colors, so that all occurrences of a specified color in a
document overprint (ink-level overprinting). For instructions on applying
ink-level overprinting, see "Setting separations options" on page 396.
You can also overprint specific objects (object-level overprinting). Object-level
overprinting overrides ink-level overprinting. For instructions on applying
object-level overprinting, see "Applying overprinting to selected objects" on page 407.
You can choose to hide or show overprinting onscreen.
You cannot set an imported EPS to overprint in FreeHand; you must set
overprinting in the exporting application. For example, to overprint objects in
EPS images and prevent the EPS from knocking out the background on
placement in FreeHand, set the objects to overprint in the exporting application.
Trapping is another way to compensate for misregistration. Talk to your service
provider before getting started for advice on whether to overprint or trap, and
which settings to use. For more information, see "Trapping" on page 408.
Choose Edit > Preferences and click Redraw.
1
Select Display Overprinting Objects, and click OK.
2
Overprinting strokes or fills appear as a pattern of white O's onscreen, but print
normally to a PostScript or non-PostScript printer.