In Structure, a view defines which columns are displayed and in what configuration.
On the Structure Board, the current view is displayed in the top right corner. Click here to select a new view or save changes to the current view.
Changing the View
When you manually change the column configuration, you create local adjustments to the currently-selected view. You can then save the changes (if you have permissions to change the view) or save and share your customization as a new view – see Saving and Sharing Views.