Keying> View group
The View group designates what View mode you see in the Comp Window, and lets you split the view to see your keyed footage in various states simultaneously.

View pop-up
While using Primatte Keyer you will need to switch back and forth between different views to accurately build your matte, and this menu is where you make your view choice. When in the Split Screen mode, this menu is where you select what is seen on the left side of the screen.

There are seven View options.
- Comp: Tells Primatte to display the current composite. This is the keyed foreground element over the background element (consisting of one or more layers in the After Effects composite).
- Matte: Tells Primatte to display the matte as it is currently being generated.
- Foreground: Displays the unkeyed, original foreground element. This mode is useful for verifying areas of the unkeyed foreground that are to be transparent, or to identify an area for spill removal later on in the keying process.
- Background: Shows the original, unadjusted background image, if one is present. If none has been added to the composite, choosing this option will display the background color.
- Processed Foreground: Shows the keyed foreground subject with spill suppression applied to it. This acts the same as the RGB Straight mode in After Effects, in which you see the actual RGB values without the blending,
- Adjust Light Foreground: Shows the effect of the Adjust Light mode, which gives you more control as you create your key. You can especially see what Adjust Light is doing if you activate Split Screen and show the Foreground and Adjust Light Foreground modes.
- Hybrid Matte: Shows the effect of the Hybrid controls in the Keying> Refinement> Advanced group. Hybrid Matte displays an internal secondary inner matte that has been shrunk and blurred.
Split Screen checkbox
Splits the Comp Window into two different views of the image. The Split Screen checkbox toggles the split screen effect, and it is turned off by default. When it is enabled, the split screen is visible.

Above, Split Screen shows Matte View at left and Foreground View at right.
Right pop-up
When Split Screen is enabled, this pop-up chooses the View display for the right side of the Comp Window. The menu options are identical to the View pop-up. If Split Screen checkbox is turned off, the Right menu is grayed out and has no function.
Amount
Sets the location of the Split Screen between left and right sides. The default value is 50%, which sets the split at the middle of the Comp Window. Lower values move the split to the left, and higher values move it to the right.