Accessibility refers to web page information/content being obtainable and functional to largest possible audience. It is about providing access to information for those who would otherwise lose their opportunity to use the web. In contrast inaccessible means unobtainable, nonfunctional.
Accesskey
An accesskey is an XHTML attribute. It is meant to help users who navigating without a pointing device, such as a mouse. Access keys are intended to be a means of specifying a keyboard shortcut for moving to a link, form component or other tabbable object, using the following HTML elements - a, area, button, input, label, legend or textarea. Use of accesskey is controversial. The current opinion of many accessibility experts is that, accesskeys mostly work against accessibility. And because of many conflicts, defining accesskeys seem to be a waste of time unless you are designing for a controlled environment such as an intranet.
Alt Attribute
An alt attribute is used to specify alternative text. It is used to replace an image. That means that it serves the same function as the image. Users of screen-readers, language translation applications or some hand-held devices cannot directly access pictures and other graphics. Similarly, some users choose to turn picture loading off- especially those with slower dial-in connections. These users rely on alt attributes.
Alt Text
Alt text is generally a phrase or short sentence that forms the content of the alt attribute. It is contained within the quotation marks. This simple idea has great power. The wrong or inadequate alt text can make your web site inaccessible to people with disabilities.
Alternate Stylesheet
These style sheets can be selected by the visitor as alternatives to the preferred style sheet. This allows the visitor to personalize a site and choose his or her favorite scheme. They can also be used for accessibility (larger fonts etc).
Anti-alias
Anti-alias is a feature used to smooth out jagged edges of an electronic graphic image.
Attribute
In XHTML, an attribute is a characteristic of an element.
Authoring Tool
A software application used to create web pages and web sites.
