Principles of universal design

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The design communicates necessary information effectively to the user, regardless of ambient conditions or the user's sensory abilities.   Guidelines: 4a. Use different modes (pictorial, verbal, tactile) for redundant presentation of essential information. 4b. Provide adequate contrast between essential information and its surroundings. 4c. Maximize 'legibility' of essential information. 4d. Differentiate elements in ways that can...

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