1, open Excel, input What we need to edit the content, made into a table.
2. Select the cell where we want to insert the annotation, then right-click the menu and choose "Insert Comment" from the menu that appears.
3, then there will be a window to edit the text, in the window, enter the content we want to annotate (our own different views or some hints), and then click on the other cell or return to confirm that our comments are successful, in the upper right corner of the cell will appear a small red triangle.
4, when you find that your comments are incomplete or annotation errors need to be modified, you can select the cell or literature, right-click, in the right-click menu, choose "Edit Comments" or "delete comments" or: Show/hide annotations, reset it.