Years ago, when I created my spreadsheet with Excel 2003, I added a feature
that I now cannot remember how to delete, access, or edit. I now have Excel
2007. It's a text box that appears when I click on a certain cell. It's not
a comment, but the box looks like one. There are no triangles in the cell,
so it's not a comment. What is it, and how do I edit or delete it?