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Term entries in the full glossary starting with the letter "X"

W3C Glossaries

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X

From Glossary of "Weaving the Web" (1999-07-23) | Glossary for this source

The X Window system, invented by Bob Scheifler; a standard interface between a program and a screen that was ubiquitous on Unix systems. Unlike Microsoft's Windows, from the beginning X allowed programs running on one machine to display on another, across the Internet. Scheifler ran the X Consortium from MIT/LCS for many years, then spun it off, and eventually closed it.
  • X.Org is the worldwide consortium empowered with the stewardship and collaborative development of the X Window System technology and standards
Ted Nelson's planned global hypertext project.
A simplified successor to SGML. W3C's generic language for creating new markup languages. Markup languages (such as HTML) are used to represent documents with a nested, treelike structure. XML is a product of W3C and a trademark of MIT.
A style sheet language, like CSS, but also allowing document transformation.
xanadu

From Glossary of "Weaving the Web" (1999-07-23) | Glossary for this source

Ted Nelson's planned global hypertext project.
XDM instance

From XQuery 1.0: An XML Query Language (2007-01-23) | Glossary for this source

The term XDM instance is used, synonymously with the term value, to denote an unconstrained sequence of nodes and/or atomic values in the data model.
XDM instance

From XML Path Language (XPath) 2.0 (2007-01-23) | Glossary for this source

The term XDM instance is used, synonymously with the term value, to denote an unconstrained sequence of nodes and/or atomic values in the data model.
xForms model

From XForms 1.0 (2003-10-14) | Glossary for this source

The non-visible definition of an XML form as specified by XForms. The XForms Model defines the individual model items and constraints and other run-time aspects of XForms.

xForms processor

From XForms 1.0 (2003-10-14) | Glossary for this source

A software application or program that implements and conforms to the XForms specification.

XLL (eXtensible linking language)

From Requirements for String Identity Matching and String Indexing (1998-07-10) | Glossary for this source

Linking support for XML. XLL defines the #anchor syntax component of URIs for XML. A syntax for identifying elements in a document tree (e.g. based on element names that can contain arbitrary characters in XML), as well as for identifying portions of text, is defined. For consistent identification of portions of text, either or both of string identity matching and string indexing are necessary.
XML (Extensible markup language)

From Glossary of "Weaving the Web" (1999-07-23) | Glossary for this source

A simplified successor to SGML. W3C's generic language for creating new markup languages. Markup languages (such as HTML) are used to represent documents with a nested, treelike structure. XML is a product of W3C and a trademark of MIT.
XML declaration

From Extensible Markup Language (XML) 1.1 (2004-02-04) | Glossary for this source

XML 1.1 documents MUST begin with an XML declaration which specifies the version of XML being used.
XML declaration

From Extensible Markup Language (XML) 1.0 (2000-10-06) | Glossary for this source

XML documents [E107]should begin with an XML declaration which specifies the version of XML being used.
XML document

From Extensible Markup Language (XML) 1.1 (2004-02-04) | Glossary for this source

A data object is an XML document if it is well-formed, as defined in this specification. A well-formed XML document MAY in addition be valid if it meets certain further constraints.
XML document

From Extensible Markup Language (XML) 1.0 (2000-10-06) | Glossary for this source

A data object is an XML document if it is well-formed, as defined in this specification. A well-formed XML document may in addition be valid if it meets certain further constraints.
XML name

From Glossary of Document Object Model (DOM) Level 2 Events (2000-11-13) | Glossary for this source

See XML name in the XML specification [XML].
XML namespace

From XSL Transformations (XSLT) 2.0 (2007-01-23) | Glossary for this source

The XML namespace, defined in as http://www.w3.org/XML/1998/namespace, is used for attributes such as xml:lang, xml:space, and xml:id.
XML namespace

From Namespaces in XML 1.1 (2004-02-04) | Glossary for this source

An XML namespace is identified by an IRI reference; element and attribute names may be placed in an XML namespace using the mechanisms described in this specification.
XML namespace

From Namespaces in XML (1999-01-14) | Glossary for this source

An XML namespace is a collection of names, identified by a URI reference , which are used in XML documents as element types and attribute names.
XML processor

From Extensible Markup Language (XML) 1.1 (2004-02-04) | Glossary for this source

A software module called an XML processor is used to read XML documents and provide access to their content and structure.
XML processor

From Extensible Markup Language (XML) 1.0 (2000-10-06) | Glossary for this source

A software module called an XML processor is used to read XML documents and provide access to their content and structure.
xML-based format

From Architecture of the World Wide Web, Volume One (2004-12-15) | Glossary for this source

One that conforms to the syntax rules defined in the XML specification.
xPath 1.0 compatibility mode

From XSL Transformations (XSLT) 2.0 (2007-01-23) | Glossary for this source

The term XPath 1.0 compatibility mode is defined in . This is a setting in the static context of an XPath expression; it has two values, true and false. When the value is set to true, the semantics of function calls and certain other operations are adjusted to give a greater degree of backwards compatibility between XPath 2.0 and XPath 1.0.

The Glossary System has been built by Pierre Candela during an internship in W3C; it's now maintained by Dominique Hazael-Massieux

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