Comparison of a knock-out without trapping (left column) and with trapping (middle column), and overprinting (right column) for perfect and imperfect registration.
<p>Rows are as follows:
<br>1. The cyan (lighter) plate,
<br>2. The magenta (darker) plate,
<br>3. Result with perfect registration (some monitors show slight misalignment), and
</p>
<br>4. Result with imperfect registration.
<a href="//commons.wikimedia.org/wiki/User:Cmglee" title="User:Cmglee">Cmglee</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>