1. First, open the word20 10 document, enter the article to add the document, demonstrate with the following text as an example, and select the paragraph to add the document.

2. After entering, click the reference option above, and then click the "Insert Endnote" option button.

3. Click the footnote drop-down option in the reference option to open the footnote and endnote setting menu.

4. In the numbering format, select the numbering form and click the Apply button.

5. Press "Ctrl+H" on the keyboard to open the search and replacement menu, enter "E" in the search content and "&"in the replacement content. Special symbols are on the numeric keys of the keyboard. Click "Replace All" after entering.

6. At this point, comments have been added, and you can directly type or paste the contents of the document.