Web Design Glossary
AccessibilityAccessibility is the degree to which that Web site is usable, traditionally this is considered in the context of web browsers and people with disabilities such as visually impaired people using screen readers, who therefore cannot take advantage of visual or graphical cues, colour blind people, who cannot distinguish between page elements of different colours but the same intensity, or people who are physically impaired, who perhaps cannot easily manipulate a mouse to click on small areas. In recent years, with a greater focus on web standards and multiple browsing devices, the term has taken on a slightly wider meaning and is now usually considered in the wider context of useability - accessibility is an issue for all users, not just those normally considered disabled, and outside just the standard web browser. For example, use of small fonts can make large blocks of text difficult to read even for those with normal eyesight, and users today are far more likely to be accessing a website using their PDA or phone or even TV.
See also: Useability, Web Standards, WAI and WCAG
External links: W3C Accessibility Page, Jaws Screen Reader, Accessibility Services, Google Accessible Search
AgentSee also: User Agent, Robot
ApacheSee also: Web Server
AppletSee also: Java
Application ServerSee also: Web Server
block level elements
BlogAn online diary or journal, usually consisting of regular, short, time-stamped posts from one author (though sometimes more than author and/or longer posts). One of the key features is that readers can interact with the author through some sort of comment system on the blog itself, or by commenting in their own blog. The network of blogs is known as the blogosphere.
See also: Atom, RSS
BrowserSee also: User Agent
Cascading Style SheetsA language for the Web to define the look and feel of a Web page. Using a <acronym title="Cascading Style Sheet">CSS</acronym> stylesheet it is possible to define the visual look of web page elements - including the fonts, colours, borders, spacing and positioning. It also allows for different styles to be used for different output media, for example print or handheld devices. Earlier versions of <acronym title="HyperText Markup Language">HTML</acronym> mixed information about presentation (ie. the style) with information about content (ie. the text on the page), <acronym title="Cascading Style Sheet">CSS</acronym> allows a 'seperation of concerns' which is considered good practice not only in web design and development but in the wider world of software engineering.
See also: HTML, XHTML, Web Standards, CSSFirstSteps, CSSForPageLayout, CSSAdvancedTopics
External links: W3C CSS Home Page, CSS Discuss Wiki, CSS Beginner's Guide, CSS Zen Garden, Position Is Everything
CDATAUsed in an XML document to demarcate areas of the document which contain character data - ie. are not to be parsed as XML.
CSSSee: Cascading Style Sheets
deprecatedIn the context of web standards, applies to elements which are planned to be removed from a future version of the standard but are currently still valid.
external style sheet
fixed width layout
HTMLSee also: XHTML, CSS, HTMLFirstSteps
JPGShortened version of JPEG commonly used to identify JPEG files by the addition of a three letter extension, eg. picture.jpg
non - breaking space
Web BrowserSee also: User Agent