2. Symbolic notes make the key and difficult issues in the book easy to read, and prepare for other forms of notes such as outline notes and excerpts.
3. The comment on writing can be a summary of a paragraph in the book, an experience, or a question expressed without understanding a certain question in the book.
4. When taking symbolic notes, you should pay attention to the following points: the book you read must be your own. Don't scribble books in the library or books borrowed by others.
The meaning represented by each symbol should be fixed and cannot be changed at will. For example, use a straight line to represent important content, and use "?" To express wonderful sentences or beautiful words, use ""to indicate the place to pay special attention, and use "?" Indicates a problem that has not yet been understood. In the future, you should use these symbols according to your own regulations.
6. Don't make too many symbols. If the whole page is circled, crossed and all become the focus, that is to say, without the focus, the symbol loses its meaning.
7. Be clean and tidy. Don't make the book so dirty that you can't read the original clearly.