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Glossary » redundant coding

redundant coding

or secondary coding; representing information in more than one way so that users have more than one opportunity to perceive and understand it, to reinforce the information, to make the information more accessible (because one representation may not work for a certain technology or user), or to suit user preferences.

A common example on websites it provide redundant text links in addition to a graphic navigation bar. Another example on websites is that links are both blue and underlined, so that a color-impaired user could see the underlines, and a user who chose to turn underlining off could still see the color.