title: Liferay Group types
body: <p>When I run the following sql </p>
  
  <pre><code>select distinct(type_) from Group_
  </code></pre>
  
  <p>I get group types 0,1,3 in my database table <code>Group_</code>.</p>
  
  <p>What does 0 , 1 and 3 mean, and are there any other possible values?</p>