Creating transparency knockoutsYou use the Knockout Group option in the Transparency palette to make every object of the targeted group or layer knock out--that is, visually block--the areas of other objects in the group or layer that it overlays. Only artwork within the targeted group or layer is knocked out. Objects beneath the targeted group or in different layers are still visible relative to the group or layer. Selecting the Knockout Group option cycles it through three states: on (check mark), off (no mark), and neutral (square). Use the neutral option when you want to group artwork without interfering with the knockout behavior determined by the enclosing layer or group. Use the off option when you want to ensure that a layer or a group of transparent objects will never knock each other out. ![]() Group with Knockout Group option deselected (left) compared to selected (right) To view the Transparency options: Choose Show Options from the Transparency palette menu. To knock out objects within a group or layer:
To prevent objects from knocking out within a knockout group or layer:
To make an object's transparent strokes or fills knock each other out:
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