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Graphically, the exclamation mark is represented by variations on the theme of a period with a vertical line above. One theory of its origin posits derivation from a Latin exclamation of joy, namely io, analogous to "hooray"; copyists wrote the Latin word io at the end of a sentence, to indicate expression of joy.
The second is a link to the article that details that symbol, using its Unicode standard name or common alias. (Holding the mouse pointer on the hyperlink will pop up a summary of the symbol's function.); The third gives symbols listed elsewhere in the table that are similar to it in meaning or appearance, or that may be confused with it;
The symbol was adopted as a standard in the US by ANSI in 1969. [6] [8] It was first documented as an international symbol in 1963 in International Organization for Standardization (ISO) recommendation R.361. [9] In 1974, after approval by national standards bodies, the symbol became an international standard as ISO 361 Basic ionizing radiation ...
(the symbol may also indicate the domain and codomain of a function; see table of mathematical symbols). ⊃ {\displaystyle \supset } may mean the same as ⇒ {\displaystyle \Rightarrow } (the symbol may also mean superset ).
Outside of the Spanish-speaking world, John Wilkins proposed using the upside-down exclamation mark "¡" as a symbol at the end of a sentence to denote irony in 1668. He was one of many, including Desiderius Erasmus, who felt there was a need for such a punctuation mark, but Wilkins' proposal, like the other attempts, failed to take hold. [4] [5]
Hazard symbols; List of mathematical constants (typically letters and compound symbols) Glossary of mathematical symbols; List of physical constants (typically letters and compound symbols) List of common physics notations (typically letters used as variable names in equations) Rod of Asclepius / Caduceus as a symbol of medicine
A FBI document obtained by Wikileaks details the symbols and logos used by pedophiles to identify sexual preferences. According to the document members of pedophilic organizations use of ...
The question comma has a comma instead of the dot at the bottom of a question mark, while the exclamation comma has a comma in place of the point at the bottom of an exclamation mark. These were intended for use as question and exclamation marks within a sentence, a function for which normal question and exclamation marks can also be used, but ...