Some search engines place significant importance on H tags because their assumption is that a “true” heading means that all the paragraphs up until the next heading will be about that particular subject. This idea goes back to Information Science and HTML’s parent language, SGML. So you can see why the academic minds who design search engines might value a word in an H tag very highly. H1 and H2 tags are analyzed from two perspectives: from the point of view of search engines and internet surfers.
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