What is the logic behind to use Semantic meaningful markup?

Posted by metal-gear-solid on Stack Overflow See other posts from Stack Overflow or by metal-gear-solid
Published on 2010-04-14T06:35:57Z Indexed on 2010/04/14 6:53 UTC
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XHTML

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css

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semantic-markup

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html5

Is it only for screen reader software? because browser renders both type of tags semantic and presentational in same manner.

For example:

for browser for us and for css <strong> and <b> is same. what is the purpose to semantic tag over presentational tag.

is it for screen readers only or it's for better management of code?

if it's for developer strong and b both can produce same result on browser.

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