The Comparison tool is a viewer tool for comparing two images.
You can place the Comparison tool in either of two locations by dragging and dropping the tool from the Tools tab. Like any other tool, you can place the Comparison tool anywhere in the current composition by dropping the tool in the Schematic, Player, etc.
The Display Tools is the desired location for the Comparison tool. The Display Tools contains two place holders; one for the Comparison tool and one for the Display Modifier. By default these place holders contain the Comparison and the Display Pass Through tools.
The Comparison tool can be placed either before or after the display modifier. This placement is controlled by the Display Tools Order setting in the User Preferences (Creative tab), which has a default value of Comparison before the display modifier.
Access to the Display Tools Comparison tool is through the Player options menu in the south gate. By dropping a Comparison tool on the appropriate tab in the Player options, it will replace the current Comparison tool. This is similar to creating a display modifier.
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