Wildcards that represent any single character in some operating systems and applications. Asterisk and are two characters commonly used in MS-DOS, WindowsNT, OS/2 and other operating systems.
Question mark is an auxiliary symbol tool of mood and intonation, which indicates the pause and mood 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. A rhetorical question also ends with a question mark. Question marks generally do not appear at the beginning of a line. There are rhetorical questions and rhetorical questions.