Question

what do you mean by tagging​

Answer 1

Answer:

The <a> tag defines a hyperlink, which is used to link from one page to another

Answer 2

Answer:

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Put simply, whether on Facebook, Twitter, or Instagram, tagging allows a user to identify someone else in a post, photo, tweet, or status update. This tag takes the form of a clickable name or username that will notify a person that you have referred to them in a post or photo.