What function does the border button serve in a spreadsheet?

The border button in a spreadsheet serves to add borders to selected cells or ranges of cells. When you use this function, it allows you to visually enhance the organization of the data by creating distinct sections or highlighting specific areas within the spreadsheet. Borders can be applied in different styles and thicknesses, which helps to improve readability and presentation. This feature is particularly useful when preparing reports or data analysis, as it aids in guiding the viewer's eye to important information or separating sections of content.

Other functions like changing font styles, removing colors, or centering text serve different purposes in formatting, but they do not provide the visual boundaries or separation that borders do. Thus, recognizing the purpose of the border button is essential for effective spreadsheet design and data presentation.