excel Contextual tabs

In addition to the standard tabs, Excel includes contextual tabs. Whenever an object (such as a
chart, a table, a picture, or SmartArt) is selected, tools for working with that specific object are
made available in the Ribbon.
It is shows the contextual tabs that appear when an embedded equation is selected. In this
case, Excel displays two contextual tabs: Format (for working with object) and Design (for working with the equation). Notice that the contextual tabs contain a description (Drawing Tools and
Equation Tools) in Excel’s title bar. When contextual tabs are displayed, you can, of course, continue to use all the other tabs.