Hreflang tags are code snippets released by Google in 2011 to assist Global Web sites. Their purpose is to tell research crawlers the language and geographical locale a web page is meant for. As an example, This is certainly what an hreflang tag aimed toward French and Switzerland seems like. https://milobkqwa.madmouseblog.com/10854433/what-does-hreflang-tags-wordpress-mean