plaintext element was originally intended to instruct the browser to ignore any formatting or HTML markup , such that
<p> would appear in screen as
<p> rather than actually create a new paragraph. It is deprecated and is probably best forgotten entirely.
The example shown would render as follows:
plaintext being used to demonstrate a code sample:
<p>The markup for this is:</p> <plaintext><h1>Main heading goes here</h1> <p>First paragraph goes here</p> <h2>Sub-heading goes here</h2></plaintext>. </body> </html>