Excel is a convenient time to record, provides the ability to add annotations, when you are commenting on the cell, you can simply rest the mouse on the cell, you will see the appropriate annotation. Annotations are added by the following methods:
1. Click the cell where you want to add the annotation, click insert → comment, type the text you want to annotate in the pop-up balloons, and then click the worksheet area outside the annotation box;
2. After you add a comment, a small red dot appears in the upper-right corner of the cell, prompting the cell to be annotated. You can display annotations by moving the mouse over the cell.