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When the Microsoft and Netscape messaging clients display plain ASCII messages, they automatically activate URLs found in those messages. If I compose such a message, using a messaging client that's set to text mode (see the following tip), I need only mention the site http://udell.roninhouse.com/ in a message that I post to a newsgroup or email to you. Your message reader will render the URL's text as a clickable hyperlink. By merely reproducing a correctly spelled URL, we become—in a limited but important sense—hypertext authors. In the text-mode messaging environment, nobody has to know that the HTML representation of that link is <a href="http://udell.roninhouse.com/">http://udell.roninhouse.com</a>. You can just type a URL, or better yet, cut and paste one into your message.