1, horizontal line-used to mark favorite sentences. "_ _" is underlined (pronounced as xi' hu' xi' an). Use the key after the number "0" on the keyboard, and use Shift+"-"to type in English input. But this is not a real underline.
2. wavy lines-used to mark words. The composition of wavy lines is only a few columns ~ ~ ~ ~ ~ ~, and you can use colored pens when drawing wavy lines.
3. Bullets-used to mark favorite sentences. Bullets () are symbols that attract readers' attention and are used to dot the current text; When arranged vertically, it is marked on the right side of the word. "Words, phrases and sentences that require readers' special attention are marked with bullets."
4. Question mark-used to mark the place you don't understand. Chinese question mark: "?" English question mark: "?" Question mark is an auxiliary symbol tool of mood and intonation, which indicates a pause after a sentence is finished. Used at the end of questions, rhetorical questions and rhetorical questions. Pause at the end of the question, with a question mark.
5, brackets-used to explain words that you don't understand. Parentheses generally refer to symbols used to indicate comments in an article. This kind of comment is parenthesis sandwiched in the middle of the text. When writing an article somewhere, it is sometimes necessary to add a note in order to make readers understand it more thoroughly.
Extended data:
Signs are signs that attract attention and are easy to remember and identify. The nature of annotations is varied. However, parentheses can only explain the previous statements and cannot introduce new content.
Parentheses are mainly divided into four categories: braces, brackets, brackets and brackets. In addition, there are hexagonal brackets "]" and angle brackets "
References:
Baidu encyclopedia-brackets