Each chart has a D-Link, which provides a text description of the chart. After the chart is initially designed and put in a web page, both the chart and the descriptive text will then be generated from data in the user s database. As the data changes, the chart and the descriptive text automatically change to match the new data .
Sighted users receive additional information through pop-up text and drilling down to another chart.
Navigation through large amounts of data is simple, fast and convenient. The D-link descriptive text gives the visually impaired information needed to understand the data presented in the chart. This fulfills the requirements of Section 508 of the Rehabilitation Act . Both the chart and the descriptive text are generated from data in the user s database. As the data changes, the chart and the descriptive text change automatically.