Selected cells in an Excel spreadsheet can be emphasized by adding a border to make them stand out. For instance, you might wish to call attention to the result of a calculation. Borders can be ...

One of the techniques you can use with Excel to make a presentation look better is to assign an outside border to a cell or group of cells to call subtle attention to them.

In Excel you can put borders around squares and they can be changed by going to Format, Cells, then Borders. However, this is very long-winded when not every cell is bordered.