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Appendix B: Additional Guidelines for Making Electronic Textbooks Accessible to Individuals with a Wide Range of Disabilities 

1. All important information which is presented auditorially should also be available in visual form.

2. All speech output should be presented redundantly as text or in the form of captions.

3. Important emphasis delivered auditorially must be captured and presented either as a part of the text caption or through visual presentation.

4. All other auditory signals, including natural sounds from the electronic textbook which are important to its operation, must be provided in a visual form.

5. Electronic textbooks should have the capability for increasing or reducing the speed of presentation, or pausing the presentation, to allow for different levels of comprehension.

6. For movies, a transcript of spoken information and an indication of environmental sounds should be provided.

7. Additionally, movies should contain a sign language track which could be implemented through modern electronic movie formats such as QuickTime, which feature multiple video tracks.

Source: Texas Task Force on Electronic Textbook Accessibility

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Last Revision: July 30, 2002