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-- Google SEO News and Discussion
---- Mobile friendly - vary http header question
lucy24 - 11:13 pm on May 1, 2013 (gmt 0)Thread source:: http://www.webmasterworld.com/google/4522975.htm
Short answer: It doesn't go in the HTML at all. It goes in whatever generated the HTML. This might be either php/cgi/you-name it, or it might be individual human effort.
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