title: What are the URL parameters? (element at position #3 in urlparse result)
body: <p>I've taken a look to <code>urlparse.urlparse</code> method documentation and I'm a little bit confused about what is the <code>parameters</code> part (not to be confused with the more familiar <code>query</code> part, that is what goes after the question mark and before the fragment part).</p>
  
  <p>Wikipedia entry on URL's structure doesn't say anything about that, so could please anybody elaborate a little bit on this and possibly give some examples?</p>