2. Taking the word document as an example, there are three steps to mark the documents cited in the text: open the word document and find the text content of the document that needs to be marked, as shown in the figure, the "ultimate hometown" needs to be marked.
3. Common methods include deleting secondary information; Use synonyms, antonyms and so on. Use comments; Change one's statement, such as changing the angle or order of the statement. Is to summarize the whole document into a few sentences, or even a sentence or two.