From OWL Web Ontology Language Guide ( 2004-02-10) as in XML

A predefined element that you place in a drawing by means of a single command. A single piece of geometry or text.

In SGML, a named part of a marked up document. An entity can be used for a string of characters or a whole file of text. Special characters (like "Ê") are normally represented by entities (like "Ê") in SGML.

A virtual storage unit that associates a unique name with the content of the storage unit. Entities can be used to store XML text and markup (text entities), binary data, such as audio or graphics files (binary entities), or non-ASCII characters (character entities). When an entity is referenced in an XML file, the entity's content replaces the reference.

An HTML symbol that represents a special character. An SGML entity has a much wider use as a sort of macro and inclusion facility. This form of entity may appear in future versions of HTML.

A text string or file with a name. Most entities are named by the author (using the !entity element), but some entities are predefined. See also entity declaration and entity reference.

a handy construct that, at its simplest, allows you to define special characters for insertion into your documents

a handy little construct that, at its simplest, allows you to define special characters that you can insert into your documents

a named special character that might not be available in your character set

a name that is declared and referenced, whether it's predeclared like the lt or amp entities or declared in a DTD as one might do with nbsp or ntilde

an atomic regular expression, or, in terms of what we've learnt so far, a single character, dot or character class

an item in an XML document

a particularly important class in the APDM, which deserves to be serialized into its own XML file

a placeholder for content, which you declare once and can use many times almost anywhere in the document

a special code used to graphically represent a non-ASCII character, such as those used in a number of European languages

a storage unit that contains a piece of an XML document

a textual macro unique to a document that is replaced with text or XML components, when the document is processed

a value that has been defined elsewhere in the DTD to have a particular meaning

a XML structural construct

An SGML convention that allows an encoder to specify in a Document Type Definition or in the Declaration Subset of an SGML instance an abbreviated name that serves as a substitute in the instance for something else, such as a block of boilerplate text, another document, or an image file.

"a collection of characters that can be referenced as a unit" (ISO 8879:1986). Entities provide a useful way of easily incorporating often repeated characters, phrases or paragraphs within a document; or bringing separate units of information (graphics or external files, for example) that are stored externally into an SGML document at the time of processing.

A unit of information that may be referred to by a symbol in a DTD or in a document instance. Entities may be used for character strings, characters that cannot be keyed in on a keyboard, or for separate files that may be or may not contain SGML data.

A unit of storage declared and given a name in an SGML DTD. An entity can be referenced in an SGML file and may be a literal string or an external file in SGML or some other notation.

A string of characters that may represent either another string of characters or special characters that are not part of the document's character set. Entities and the text that is substituted for them by the parser are declared in the DTD.

A distinct, individual item that can be included in an XML document by referencing it. Such an entity reference can name an entity as small as a character (for example, "<", which references the less-than symbol, or left-angle bracket (). An entity reference can also reference an entire document, or external entity, or a collection of DTD definitions (a parameter entity).

A text character that must be encoded inorder for a browser to view it as intended. (example: ampersand)

Access a predefined entity without including the DTD Parent elements Any element that may contain formatted text Child elements None Attribute Value Meaning name#CDATA Name of the predefined entity to be substituted

A declaration that maps a name to some specific bit of information in XML. There are several kinds of entities: character entities, general entities, parameter entities, and system entities. An entity must be declared before it can be referenced.

A name assigned (by means of a declaration) to some chunk of data so it can be referred to by that name; the data can be of various kinds (a special character or a chapter or a set of declarations in a DTD, for instance), and the way in which it is referred to depends on the type of data and where it is being referenced: SGML has parameter, general, external, internal, and data entities.

A name assigned to a piece of data by declaration in a DTD.

See character entity.

data with an associated notation or interpretation; for example, a sequence of octets associated with an Internet Media Type. [SGML

an entity is a logical or physical storage unit containing document content. Entities may be composed of parseable XML markup or character data, or unparsed (i.e., non-XML, possibly non-textual) content. Entity content may be either defined entirely within the document entity ("internal entities") or external to the document entity ("external entities"). In parsed entities, the replacement text may include references to other entities.

Entity is a name designated for some part of data so that it can be referenced by a name. These designations are made by a statement and the stored data might hold from simple characters to chapters or set of statements of a DTD. There are parameter entities generic, external, internal and of data on the SGML.

as in entity body in MIME in HTTP 1.0, HTTP 1.1@@ as in entity reference in SGML@@ in XML@@ see: party

An entity is a name designated for some part of data so that it can be referenced by a name. The data could be anything from from simple characters to chapters to sets of statements in a DTD. Entity parameters can be generic, external, internal or SGML data. An entity is similar to a variable in a programming language, or a macro.

XML structural construct. A file, database record, or another item that contains data. The primary purpose of an entity is to hold content—not structure, rules, or grammar. Each entity is identified by a unique name and contains its own content, from a single character inside the document to a large file that exists outside the document. The function of an XML entity is similar to that of a macro definition. The entity can be referred to by an entity reference to insert the entity's contents into the tree at that point. Entity declarations occur in the DTD.

A character that is not one of the standard 128 ASCII characters. Entities are coded between an ampersand (&) and a semicolon(;). For instance, the French "é" is created by typing: "é"

An entity is a self-contained piece of data that can be referenced as a unit. You can refer to an entity by a symbolic name in the DTD or the document. An entity can be a string of characters, a character that cannot be entered on a keyboard (such as a special symbol), a separate text file, or a separate graphic file.

A special sequence of characters, representing another character. An entity starts with "&", ends with ";" and should contain the name or the number of the entity. If you use a number, put "#" in front of it. Check the section on the HTML character set for a list of entities and their numbers.