When authenticated, users with permission to edit the site will see the administration functions overlaid on the site. Primarily this consists of the black admin menu at the top. The options available in the admin menu will vary depending on the security role of the editor. Higher security role users will have access to more advanced functions.
Editor functions also display on individual content blocks when hovered over. A cog icon will appear at the top right corner of any content block that can be edited by the user.