The purpose of this document is to provide information and resources for those interested in learning more about accessibility issues and current and next-generation information systems. The current focus of this document is on the National Information Infrastructure (NII), sometimes known as the 'information superhighway.' This document contains both information presented at a very introductory level and information which is more technical in nature. Wherever possible, all of the technical discussions are broken out and presented separately, so that readers may course through the material at a level which is comfortable to them, and which meets their information needs. This is a living document which will be continually revised and added to as more information is collected and as the efforts in the area of research, development, and public policy continue to evolve. The most recent form of this document can be found on the Internet via our ftp, gopher, or WWW servers. All of these are located at: trace.wisc.edu The document can be viewed on-line or downloaded in one of several forms to facilitate accessibility.
Adding alternative text for images is the first principle of web accessibility. It is also one of the most difficult to properly implement. The web is replete with images that have missing, incorrect, or poor alternative text. Like many things in web accessibility, determining appropriate, equivalent, alternative text is often a matter of personal interpretation. Through the use of examples, this article will present our experienced interpretation of appropriate use of alternative text.