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 … See more

Although not part of dictionary words, exclamation marks appear in some brand names and trade names, including Yum! Brands (parent … See more

Mathematics and formal logic
In elementary mathematics, the symbol represents the factorial operation. The expression n! means … See more

Now obsolete, the name ecphoneme was documented in the early 20th century.
In the 1950s, secretarial dictation and typesetting manuals in America referred to the mark as "bang", … See more

The exclamation mark is mainly used in languages that use the Latin alphabet, although usage varies slightly. It has also been adopted in … See more

Exclamation marks are used to emphasize a precautionary statement. On warning signs, an exclamation mark is often used to draw attention to a warning of danger, hazards, and the unexpected. These signs are common in hazardous environments or on potentially … See more

• U+0021 ! EXCLAMATION MARK (HTML !, ! )
Related forms have these code points:
• U+00A1 ¡ INVERTED EXCLAMATION MARK See more