Can’t edit Sidebar!

I’m trying to add a section under the “Category” section in my sidebar with the following code:
===================================

• <h2>Categories</h2>

<?php wp_list_cats (‘sort_column=name&optioncount=1&hierarchical=0’); ?>

• <h2>About</h2>
  <div class=”sidebar_section”>
  Hi
  </div>

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BUT, the “About” section that I want to add is not showing up on my sidebar.
Anything wrong?