Access Instructions
for Users with Disabilities


Access Instructions Table of Contents

  1. How NCAM Online is Organized
  2. Instructions for Blind, Visually-Impaired and Deaf Users


Go back to the NCAM home page


Other WGBH Media Access Links

  1. The Caption Center
  2. Descriptive Video Service


How NCAM Online is Organized

NCAM Online is designed to make navigation for all users as simple as possible. All images include alt-text tags, and many make use of image descriptions, or D-links. All multimedia has been captioned, described and transcribed. To learn more about these access features, see Instructions for Blind, Visually-Impaired and Deaf Users.

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Instructions for Blind, Visually-Impaired and Deaf Users

Alt-text Tags and D-links
All images on this site are accompanied by a brief alt-text tag which identifies the image or its function. If you are using a graphic browser, alt-text tags are visible only if the browser's automatic image-loading feature is turned off.

In addition, some images are followed by a D hyperlink (in some cases, the D precedes the image). Selecting this D-link will bring you to a textual description of the image. The description is typically two or three sentences long and may contain hyperlinks. At the end of the description is a "Return" link; selecting this link will take you back to the image.

Captioned and Described Movie Clips
NCAM has been experimenting with ways to provide captions and audio descriptions on Web-based movie clips using Apple's QuickTime, the World Wide Web Consortium's Synchronized Multimedia Integration Language (SMIL) and Microsoft's Synchronized Accessible Media Interchange language (SAMI). For samples of accessible multimedia, please visit NCAM's Web Access Project.

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