When writing a paper in Word, how to mark the corner mark and insert something in the text of the paper?

1. First, we open word on the computer, and then enter SO2 in it.

2. Then we choose the number 2.

3. Then we click on the superscript in the toolbar.

4. The result is shown in the figure, so that we can mark the corner.

5. In addition, we can also select the number 2, and then right-click to select the font.

6. In the pop-up interface, we click to check the subscript and click OK.

7. The result is shown in the figure, so that we can make the corner mark.