The "Unscoped view" gives you a broader overview of your text in our editor by having multiple scenarios open at the same time.
When editing a section as a standard you can only have one scenario open at the same time. When you open a new scenario for editing and writing the previously opened scenario automatically closes.
However, by using the unscoped view you can have multiple scenarios open at the same time. This gives you a broader overview of your text and is a good tool to use to make sure, that you do not write the same in different scenarios.
You will find the unscoped view button at the top bar to the right when opening a section in the editor. Just click it, and the button becomes orange and unscoped view is enabled.