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This article lists the character entity references that are valid in HTML and XML documents. A character entity reference refers to the content of a named entity. An entity declaration is created in XML, SGML and HTML documents (before HTML5) by using the <!ENTITY name "value"> syntax in a Document type definition (DTD).
On the opposite, the code point U+0085 is a valid control character in Unicode and ISO/IEC 10646, as well as in XML 1.0 and XML 1.1 documents (in all contexts), and its usage is not discouraged (it is treated as whitespace in many XML contexts, or as a line-break control similar to U+000D and U+000A in preformatted texts in some XML applications).
In character data and attribute values, XML 1.1 allows the use of more control characters than XML 1.0, but, for "robustness", most of the control characters introduced in XML 1.1 must be expressed as numeric character references (and #x7F through #x9F, which had been allowed in XML 1.0, are in XML 1.1 even required to be expressed as numeric ...
The term CDATA, meaning character data, is used for distinct, but related, purposes in the markup languages SGML and XML.The term indicates that a certain portion of the document is general character data, rather than non-character data or character data with a more specific, limited structure.
For some XML parsing models, none of them (except the five XML entities) are usable. In others, the HTML DTD is parsed (or assumed) and the HTML entities are permissible. But which set of entities? In particular, HTML5 doesn't indicate the DTD to be used (it's implicit, by defined HTML5 behaviour outside the normal XML or SGML parsing models).
San Francisco 49ers linebacker De'Vondre Campbell jogs onto the field before an NFL football game against the Los Angeles Rams in Santa Clara, Calif., Thursday, Dec. 12, 2024.
Dogs can eat some "human foods," but it's hard to keep track of what your pet can and cannot consume. Many ask, is cheese safe for my dog?
Researchers at the University of Colorado Anschutz Medical Campus received up to $46 million in a grant to help develop an innovative treatment to cure blindness.