See Also: The Microsoft 2007 Office Fluent user interface (UI) replaces the current system of layered menus, toolbars, and task panes with a simpler system optimized for efficiency and discoverability. The Ribbon is a part of the Office Fluent interface as are context (right-click) menus, the Quick Access Toolbar, and the Microsoft Office button. You add components to the Ribbon with XML markup elements and set properties on those components by using attributes. You assign functionality to the components by using any programming language supported by Microsoft Visual Studio 2005, such as Microsoft Visual Basic.NET, and C#, as well as Microsoft Visual Basic for Applications (VBA), Microsoft Visual C++, and Microsoft Visual Basic 6.0.