To highlight cells in Excel or another spreadsheet program is to use the mouse pointer to click on a cell or cells. It is also known as selecting data.
Before you can perform work on a cell such as formatting or include the data in a cell in a function or formula the cell must first be highlighted.
There are a number of ways to highlight cells including: drag select using the mouse, selecting adjacent cells using the Shift key and arrow keys on the keyboard, or typing a range in the Name Box.
When multiple cells are highlighted in a worksheet there is still only one active cell as seen in the image above.


