title: knitr and UTF8 encoding
body: <p>A few days ago, I started writing on a german R-Script. Unfortunately, the following code chunk doesn't work when I <code>knit()</code> the document: </p>
  
  <pre><code>@    
  &lt;&lt;&gt;&gt;=
  äö &lt;- ordered(c(1,3,2,2))
  @
  </code></pre>
  
  <p>Can anyone help me solve this problem?  </p>
  
  <p>PS: I'm working with Linux.</p>