title: How to put in labels in list for R?
body: <p>I am using R currently and I want to know how can I label the list objects when 
  I declare a list. For example: <code>return(list(xhat,alpha,beta))</code>, and <code>xhat</code>, <code>alpha</code> and <code>beta</code>
  are themselves arrays. I want to give each an appropriate label.</p>
  
  <p>Thank you.</p>