Converting a document table of contents to plain text usually requires the use of text processing software or tools. The specific steps are as follows: 1 Open a text processing software or tool such as Word or Docs. 2 Create a new document in the software or tool and add the required document table of contents. 3 Turn the titles and sub-titles in the document table of contents into sections and add a title to each section. 4 Turn each sub-paragraph into plain text and add them to the new document. 5. Arrange and format the document as needed. It is important to note that converting the document table of contents to plain text format may take some time and effort. In addition, different document types and format may have different conversion methods. Therefore, if you are not sure how to convert the document table of contents to plain text format, it is recommended to refer to the relevant document template or tutorial to better understand how to handle the document table of contents.