<div>
    <div>
      Name: Joe Blow
    </div>
    <div>
      Email: joe@blow.com
    </div>
    <div>
      <a href="/contacts/42/edit">Edit</a>
      <a href="/contacts/42/email">Email</a>
      <a href="/contacts/42/archive">Archive</a>
    </div>
  </div>

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So, what makes this HTML/hypertext special? The answer is also simple: this bit of HTML encodes both the data about the contact as well as the actions available on that data, in the form of hyperlinks.