Glossary of full

Term entries in the full glossary

W3C Glossaries

Showing results 21 - 40 of 1725

adaptation

From Glossary of Terms for Device Independence (2005-01-18)

a process of selection, generation or modification that produces one or more perceivable units in response to a requested uniform resource identifier in a given delivery context.
adaptation preferences

From Glossary of Terms for Device Independence (2005-01-18)

A set of preferences, specified by a user , that may affect the adaptation for a given delivery context, and so change the resultant user experience .
additional characters

From Namespaces in XML 1.1 (2004-02-04)

The additional characters allowed in IRIs by are:
advisory board

From Glossary of W3C Jargon (2003-03-11)

n. A group of 9, elected by the Advisory Committee, with various responsibilities.
advisory committee

From Glossary of W3C Jargon (2003-03-11)

n. The group consisting of the "official representatives" of each W3C Member organization.
age

From Hypertext Transfer Protocol -- HTTP/1.1 (1999-06-15)

The age of a response is the time since it was sent by, or successfully validated with, the origin server.
agent

From Web Services Glossary (2004-02-11)

An agent is a program acting on behalf of a person or organization. (This definition is a specialization of the definition in [Web Arch]. It corresponds to the notion of software agent in [Web Arch].)

aggregated authored units

From Glossary of Terms for Device Independence (2005-01-18)

A set of authored units that have been aggregated in some way.
aggregation

From Glossary of Terms for Device Independence (2005-01-18)

The act of combining materials in various ways.
Where the materials being aggregated are authored units, the result of aggregation is an aggregated authored unit.
alert

From User Agent Accessibility Guidelines 1.0 (2002-12-17)

In this document, "to alert" means to make the user aware of some event, without requiring acknowledgement. For example, the user agent may alert the user that new content is available on the server by displaying a text message in the user agent's status bar. See checkpoint 1.3 for requirements about alerts.
alert

From Authoring Tool Accessibility Guidelines 1.0 (2000-02-03)

An "alert" draws the author's attention to an event or situation. It may require a response from the author.
alias

From XSL Transformations (XSLT) 2.0 (2007-01-23)

A stylesheet can use the xsl:namespace-alias element to declare that a literal namespace URI is being used as an alias for a target namespace URI.
alpha

From Portable Network Graphics (PNG) Specification (Second Edition) (2003-11-10)

a value representing a pixel's degree of opacity. The more opaque a pixel, the more it hides the background against which the image is presented. Zero alpha represents a completely transparent pixel, maximum alpha represents a completely opaque pixel.
an implicit representation of transparent pixels. If every pixel with a specific colour or greyscale value is fully transparent and all other pixels are fully opaque, the alphachannel may be represented implicitly.
separating an alphachannel in which every pixel is fully opaque; all alpha values are the maximum value. The fact that all pixels are fully opaque is represented implicitly.
indexed table of alphasample values, which in an indexed-colour image defines the alpha sample values of the reference image. The alpha table has the same number of entries as the palette.
alpha compaction

From Portable Network Graphics (PNG) Specification (Second Edition) (2003-11-10)

an implicit representation of transparent pixels . If every pixel with a specific colour or greyscale value is fully transparent and all other pixels are fully opaque, the alpha channel may be represented implicitly.
alpha separation

From Portable Network Graphics (PNG) Specification (Second Edition) (2003-11-10)

separating an alpha channel in which every pixel is fully opaque; all alpha values are the maximum value. The fact that all pixels are fully opaque is represented implicitly.
alpha table

From Portable Network Graphics (PNG) Specification (Second Edition) (2003-11-10)

indexed table of alpha sample values, which in an indexed-colour image defines the alpha sample values of the reference image . The alpha table has the same number of entries as the palette .
alternative information

From Authoring Tool Accessibility Guidelines 1.0 (2000-02-03)

Content is "equivalent" to other content when both fulfill essentially the same function or purpose upon presentation to the user. Equivalent alternatives play an important role in accessible authoring practices since certain types of content may not be accessible to all users (e.g., video, images, audio, etc.). Authors are encouraged to provide text equivalents for non-text content since text may be rendered as synthesized speech for individuals who have visual or learning disabilities, as braille for individuals who are blind, or as graphical text for individuals who are deaf or do not have a disability. For more information about equivalent alternatives, please refer to the Web Content Accessibility Guidelines WCAG 1.0 [WCAG10].
amaya

From Glossary of "Weaving the Web" (1999-07-23)

An open source Web browser editor from W3C and friends, used to push leading-edge ideas in Web client design.
ancestor

From Glossary of Cascading Style Sheets, level 2 CSS2 Specification (1998-05-12)

An element A is called an ancestor of an element B, if and only if B is a descendant of A.
ancestor

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

An ancestor node of any node A is any node above A in a tree model of a document, where "above" means "toward the root."

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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