Using the editor, you can modify a number of aspects of your table. Security filters can be added here, controlling what each user is able to view.You can also change your app's locale. If you're just starting out, there is a default compatibility option that is useful to keep. Read more about changing locales in Locales: Diving Deeper.
The section below shows information about the source from which your data is being accessed. The source URL is visible, and you can see from which worksheet your table is coming, as well as the name of the source provider.