In Microsoft Excel, you can add Notes to your cells. When the cell has a note, a red indicator will appear at the corner of your cell. If you hover the cursor over the cell, the note will appear.

Visual chaos: The alternative to the slow, stop-start process is clicking "Show All Notes" or "Show Comments" in the Review ...

Windows may get all the attention, but when you want to get real work done, you turn to the applications that run on it. And if you use spreadsheets, that generally means Excel. Excel is, of course, ...