title: Django, name parameter in urlpatterns
body: <p>I'm following a tutorial where my urlpatterns are:</p>
  
  <pre><code>urlpatterns = patterns('',
      url(r'^passwords/$', PasswordListView.as_view(), name='passwords_api_root'),
      url(r'^passwords/(?P&lt;id&gt;[0-9]+)$', PasswordInstanceView.as_view(), name='passwords_api_instance'),
      ...other urls here...,
  )
  </code></pre>
  
  <p>The <em>PasswordListView</em> and <em>PasswordInstanceView</em> are supposed to be class based views. 
  I could not figure out the meaning of the <strong>name</strong> parameter. Is it a default parameter passed to the view?</p>