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Learn how to use character entity references in XML and HTML documents, and see the list of predefined and custom entities for various scripts and symbols. Find out the differences between numeric and character entity references, and the formal public identifiers for HTML DTD entities subsets.
Learn about the history, usage and names of the slash, a slanting line punctuation mark /. The slash is used for division, fractions, exclusive or, inclusive or, dates, and more.
Tone indicators or tone tags are symbols attached to a message to state the intonation or intent, such as /j for joking or /s for sarcastic. Learn the history, usage and list of common tone indicators on the internet.
Learn about the history and meaning of media control symbols, such as play, pause, stop, and rewind, used on various devices and platforms. Find out how they are standardized, used in popular culture, and applied to appliances and other mechanical devices.
Learn about the division sign (÷), a mathematical symbol consisting of a short horizontal line with a dot above and another dot below, used in Anglophone countries to indicate the operation of division. Find out its origin, alternative symbols, keyboard entry and Unicode code points.
Learn how to specify and detect the character encoding of HTML documents, and which encodings are permitted by the HTML standards. The web page explains the difference between UTF-8, UTF-16, UTF-32, and other encodings, and their advantages and disadvantages.
Strikethrough is a typographical presentation of words with a horizontal line through their center, indicating errors, deletions or emphasis. Learn how to use strikethrough in HTML, CSS, Unicode and other markup languages, and see its history and variations.
Percent-encoding is a method to encode data in a URI using only ASCII characters. The forward slash / is a reserved character that must be percent-encoded as %2f or %2F in some contexts.