title: Django Admin Fieldsets
body: <p>Trying to understand Django Admin a bit better, but I find the Django documentation a bit lacking sometimes (or perhaps my capacity to understand).</p>
  <p>I know you can use fieldsets to control the layout of certain admin pages. What I can't seem to grasp is what the fieldset names are.</p>
  <p>If I have the following class</p>
  <pre class="lang-py prettyprint-override"><code>class Demo(model.Model):
      name = models.CharField(max_length=150)
      address = models.CharField(max_length=150)
      city = models.CharField(max_length=50)
      zip = models.CharField(max_length=15)
  </code></pre>
  <p>and Admin class as the following</p>
  <pre class="lang-py prettyprint-override"><code>class DemoAdmin(admin.ModelAdmin):
      list_display = ('name', 'City')
  </code></pre>
  <p>In this, albeit contrived example, what possible fieldsets could I use?</p>