You can go split-screen on your Chromebook to divide the screen into two windows. Here's how to do it.

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Both methods also work on secondary displays. This article explains how to rotate a Chromebook screen or its external display. If you see a pop-up the first time you do it, select Continue. Each time ...

It's easy to rotate the screen on your Chromebook by 90 degrees or another orientation. Here's how to do it.