Uppercase

Uppercase refers to capital letters in the alphabet, as opposed to lowercase which refers to small letters. Uppercase letters are commonly used for the first letter of a sentence, proper nouns, and acronyms. They are also used for emphasis and attention-grabbing purposes in titles, headings, and labels. In typography, uppercase letters are designed differently from lowercase letters, with a more distinct and noticeable appearance. The use of uppercase letters helps to establish hierarchy and structure in written communication, and can impact the overall visual impact and readability of a document.