title: manipulate text edge labels ctree
body: <p>Got a  ctree with four labels, but the categories are long text therefore just the first is shown.</p>
  
  <pre><code>category;presence;ratio;tested;located
  palindromic_recursion;1;0;0;0
  conceptual_comprehension;0;1;0;0
  infoxication_syndrome;0;0;1;0
  foreign_words_abuse;0;0;0;1
  palindromic_recursion;1;0;0;0
  conceptual_comprehension;0;1;0;0
  infoxication_syndrome;0;0;1;0
  foreign_words_abuse;0;0;0;1
  
  concepts.ctree &lt;- ctree(category ~., data)
  plot(concepts.ctree)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/mo3W2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mo3W2.png" alt="plotted ctree"></a></p>
  
  <p>is there any way or parameter for manipultating (rotate) text, edge label names and this way force them to be all shown in plot?</p>
  
  <p>My real data is much bigger but this sample is ok to test it if you do not use zoom tool.</p>
  
  <p>Regards</p>