how to get formatted data(by wmd editor) in textarea

I want to show the data or about us to edit like stackoverflow so i used wmd editor i also used the markdown.php for markdown and its working fine. but when i fetch data in text area to show in wmd editor for that i am doing

 <textarea id="wmd-input"  class="wmd-panel" name="aboutme" value=""><?php echo $users->aboutme();?></textarea>  

now the problem is that i am getting the data form $users->aboutme() is with html tag

here i want to know how to remove the html tag and show like when i cal outside the textarea

Try This

<?php echo htmlentities($users->aboutme());?>