U+0021 "!" Exclamation Mark Unicode Character

U+0021 "!" Exclamation Mark is a punctuation symbol typically used to indicate strong emotion, emphasis, surprise, or a command in written language. It is part of the Basic Latin Unicode block and is defined at code point 21 in hexadecimal, making it one of the earliest encoded characters. In digital text, it serves both grammatical and decorative functions, appearing in programming languages as a logical NOT operator and in various writing systems to convey excitement or urgency. Its history dates back to medieval Latin manuscripts, where it was derived from the Latin word "io" (meaning joy) written with the "o" below the "i," later evolving into the modern vertical bar with a dot.