Question mark
The rhetorical question mark or percontation point was invented by Henry Denham in the 1580s and was used at the end of a rhetorical question; however, its use died out in the 17th century. It was later revived in modern-day society by Matt DiRoberto. It was the reverse of an ordinary question mark, so that instead of the main opening pointing back into the sentence, it opened away from it. This character can be represented using the reversed question mark (⸮) found in Unicode as U+2E2E. The percontation point is analogous to the irony mark, but those are even more rarely seen.
Inverted question and exclamation marks
Some Spanish-language writers, among them Nobel laureate Pablo Neruda (1904–1973), refuse to use the inverted question mark. It is common in Internet chat rooms and instant messaging now to use only the single "?" as an ending symbol for a question, since it saves typing time. Multiple closing symbols are used for emphasis: , instead of the standard ("Why do you say that?"). Some may also use the ending symbol for both beginning and ending, giving Given the informal setting, this might be unimportant; however, teachers see this as a problem, fearing and claiming that contemporary young people are inappropriately and incorrectly extending the practice to academic homework and essays. (See )