Excel: Add Comments to Excel Spreadsheets
Sometimes it’s helpful to add comments into an Excel spreadsheet that further explain unique aspects or source of individual cell data/formula for reference.
To add a comment to a cell, select the cell then press Shift+F2 or right click and choose Add a Comment. When the comment box appears, it will contain the author’s name. If you desire, the name can be cleared before text is entered. Click anywhere on your spreadsheet to exit the comment. Cells that have a comment attached have a small red triangle in the upper-right hand corner.
To change the size of the comment, click and drag any of its borders.
To edit the comment, right click and choose Edit Comment.
If you want to delete a cell comment, right click and choose Delete Comment.
By default, all Comments are hidden; to display the comment, hover over the cell with your mouse. To display the comment all the time, right click and toggle the Show/Hide Comments command.