The main tabs allow users to navigate between the different views, features or ribbon toolbars.
GIF - Include portion of each ribbon toolbar (3-4)
HELPFUL TIPS WHEN USING THE TABS
Double-click the tab to make the ribbon toolbar remain “open” while you work. The design will resize so the whole elevation view is still visible.
Double-click again to minimize the toolbar so that it is only visible when you click on the tab.