title: Htaccess "Header set" gives me server error
body: <p>This code gives me "Internal Server Error"</p>
  
  <pre><code>Header set x-robots-Tag: "noodp, noarchive"
  </code></pre>
  
  <p>Some simple mod_rewrite codes work, but this doesn't.</p>
  
  <p>What am I missing here?</p>