The Ribbon Bar, is one of the finest improvements that Microsoft added to Office 2007 . SharePoint 2010 follows the same path. The ribbon basically, is a toolbar that appears across the top of each page in SharePoint.
The top-level elements in the Ribbon are tabs. Each tab organizes a set of groups (like Edit.Browse) and contains a set of controls. The controls inside the groups include buttons, drop-down menus, check boxes, combo boxes, split buttons, and galleries. In short, the users now can see the options like checkOut,Check In, Edit Page,Publish Page, delete page under edit tab, on the top of the Page itself.