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After the new feature is enabled, the split screen button appears in the top menu of the browser, right next to the address bar. When this button is pressed, the current tab moves to the left and you select one of the background tabs in the new window on the right.
Waiting for stable release
The split window feature built into Microsoft’s browser will definitely come in handy for users who need to work with several tabs at once. Until now, this required opening two different browser windows and bringing them side by side.