title: How to use undo/redo in CKEditor without toolbar?
body: <p>I'm using <a href="http://ckeditor.com/" rel="nofollow noreferrer">CKEditor 4.2.2</a> without default toolbar, because I want to use my own toolbar.</p>
  
  <p>CKEditor has <a href="http://docs.ckeditor.com/#!/api/CKEDITOR.plugins.undo.UndoManager" rel="nofollow noreferrer">UndoManager</a>, which has 4 function which I need: <code>undo()</code>, <code>redo()</code>, <code>undoable()</code>, <code>redoable()</code>.</p>
  
  <p>In my html I have: </p>
  
  <pre><code>&lt;textarea id='doc'&gt;
  </code></pre>
  
  <p>In javascript: </p>
  
  <pre><code>$('#' + textareaId).ckeditor();
  m_Editor = CKEDITOR.instances[textareaId];
  </code></pre>
  
  <p>I have tried to to use:</p>
  
  <ul>
  <li><code>m_Editor.undo</code> - <code>undefined</code></li>
  <li><code>m_Editor.plugins.undo</code> </li>
  </ul>
  
  <p>Here is a CKEditor instance for current textarea in console:
  <img src="https://i.stack.imgur.com/o0d2D.jpg" alt="enter image description here"></p>