What is SEO Benefit of Acronym Tag?

I need your seo experts to answers this question I want to replace all seo and PR abbreviations with:

Code:

<acronym title=” search engine optimization”> seo</acronym>
<acronym title=”Google Page Rank”>PR</acronym>

But I am wondering if Acronym Tag actually helps my seo or it just a simple HTML code?

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I think there is only a very small benefits of using Acronym Tag due to the fact that SEO is well know word and there is no need to add a tittle to it. But if you use some rare or unknown abbreviations then I suggest you to add Acronym Tag to help users find out what it is

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Thanks Marcus then I will only add it to words and abbreviations that people may don't recognize

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