   The user clicks on the link. While the request is loading,
   the link has the `up-active` class:
 
-      <a href="/foo" up-follow up-active>Foo</a>
+      <a href="/foo" up-follow class="up-active">Foo</a>
 
   Once the link destination has loaded and rendered, the `up-active` class
   is removed and the [`up-current`](/up-current) class is added:
 
-      <a href="/foo" up-follow up-current>Foo</a>
-
-  @selector [up-active]
+      <a href="/foo" up-follow class="up-current">Foo</a>
+
+  @selector .up-active
   @stable
   ###
   sectionClicked = ($section) ->


      <a href="/reports" up-alias="/reports/*">Reports</a>

  @selector [up-current]
  @stable
  ###
  up.on 'up:fragment:inserted', ->

  If the browser location changes to `/foo`, the markup changes to this:

      <nav>
        <a href="/foo" class="up-current">Foo</a>
        <a href="/bar">Bar</a>
      </nav>

