When you select a row from a table view or you edit a row, you are not taken to any of the top-level views that appear in either the menu or the buttons at the bottom of your app. Instead, you are taken to a Reference View (or Ref View for short). A Ref View is a hidden view that is only used when drilling down into your data, editing or adding data, or displaying a row via a Ref column.
System-Defined Reference Views
The system automatically generates reference views for each of the tables in the app. In the UX -> Views pane of the app editor, click on "Show System Views" to see them. For example, a table called "Students" will have a Students-Detail view. If the table allows adds or edits, there will also be a Students-Form view. If the table can be shown inline because it has a reference to another table, it will also have a Students-Inline view.
You can modify the system-generated views to easily change the look and feel of the app.
User-Defined Reference Views
You can also explicitly define Ref Views by creating a new view and setting its position to "Ref". Any user-defined Ref View takes precedence over system-defined Ref Views. You can create Ref Views based on tables or slices. The Ref View configuration will be used whenever the data source of the Ref View matches that of the view you are starting from.