2. Click the multilevel list icon.

3. Then select Define Multilevel List.

4. Then a window will appear. As shown above, "Click the level to modify", that is, the outline level.

5. Then enter the number format one by one. If the label format required by outline level 1 is blank, the content in the input number format will be deleted and left blank. The second level requires 1, so make sure that the content is 1 and the third level is 1. 1, and then enter 1. 1. Click OK after setting.

6. This solves the problem of how to automatically generate a table of contents by setting the title level in the outline view when typesetting papers in word.