Microsoft Excel has been the premier spreadsheet software for decades, since outdoing the once venerable Lotus 1-2-3, the first killer app for PCs in the 1980s. And Excel's dominance has yet to be ...

You may already know you can add a watermark to a Word document, but you might not know that you can also add a watermark to an Excel sheet. Here’s how. Adding a watermark to a Word document is an ...