Part of the Microsoft® Office Fluent user interface, the ribbon is the rectangular region across the top of the document window. It puts the options you need in plain view. The ribbon has three basic components:
Tabs. There are eight of them across the top, although you can add more, but we’ll talk about that later. Each tab represents an activity area.
Groups. Each tab has several groups that show related items together.
Commands. A command can be a button, a drop-down list, or a box to enter information.