title: When is 'mapping.getInputForward()' used?
body: <p>I would like to know what <code>mapping.getInputForward()</code> does in Struts. The API says that it creates and returns an <code>ActionForward</code> that corresponds to the input of the Action.</p>
  
  <p>But I don't understand what this means. Could anybody explain to me more clearly? Can I use this method to return to the previous page? And if I can, how do I do this?</p>