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In SGML, HTML and XML documents, the logical constructs known as character data and attribute values consist of sequences of characters, in which each character can manifest directly (representing itself), or can be represented by a series of characters called a character reference, of which there are two types: a numeric character reference and a character entity reference.
The description of entities equiv, Congruent has extra text after the Unicode name of its code point(s): -> Unicode name is "identical to" -> extra tailing text is "; sometimes used for 'equivalent to' or 'congruent'" The description of entities nequiv, NotCongruent has extra text after the Unicode name of its code point(s): -> Unicode name is ...
Incorrect HTML entity escaping may also open up security vulnerabilities for injection attacks such as cross-site scripting. If HTML attributes are left unquoted, certain characters, most importantly whitespace, such as space and tab, must be escaped using entities. Other languages related to HTML have their own methods of escaping characters.
An FPI consists of an owner identifier, followed by a double slash (//), followed by a text identifier. [1]: 381–382 For example, the identifier "-//W3C//DTD HTML 4.01//EN" can be broken down into two parts: the owner identifier which indicates the issuer of the FPI, and the text identifier which indicates the particular document or object the FPI identifies. [2]
In contrast, a character entity reference refers to a character by the name of an entity which has the desired character as its replacement text. The entity must either be predefined (built into the markup language) or explicitly declared in a Document Type Definition (DTD). The format is the same as for any entity reference: &name;
In fonts with monospaced digits, equal to the width of one digit. HTML/XML named entity:   punctuation space: U+2008: 8200 Yes: No Common: General Punctuation: Separator, space As wide as the narrow punctuation in a font, i.e. the advance width of the period or comma. [1] HTML/XML named entity:   thin space: U+2009: 8201 Yes: No ...
Move over, Wordle and Connections—there's a new NYT word game in town! The New York Times' recent game, "Strands," is becoming more and more popular as another daily activity fans can find on ...
A sentence of Zalgo text. Combining characters have been used to create Zalgo text, which is text that appears "corrupted" or "creepy" due to an overuse of combining characters. This causes the text to extend vertically, overlapping other text. [2] This is mostly used in horror contexts on the Internet.