In config.js, set the splitScreen parameter to true to enable the Split Screen View feature. If the splitScreen parameter is set to false, the Split Screen View feature is disabled. The default value is true.

splitScreen: true,

Adjusting split screen size

In config.js, set the screenSizes parameter to the screen size for panel 1 and panel 2.

The first value sets the size of screen panel 1. The second value sets the size of screen panel 2. If the first value is set to 50, the first screen panel is set to 50% of the viewer. If the second value is set 50, the second screen panel is set to 50% of the viewer.

screenSizes: [ 50, 50],

As images are added by selecting Split Image, each new document request replaces the existing document in the lower panel.