Sidebar - the area where the existing tabs within the recording and other functionalities are displayed;
Current selected tab - the currently selected tab. It can display a results table or other information;
Options sidebar - this area displays the actions available within the current recording. It also includes the OWNERSHIP at the recording level (who owns it) and the SHARING area for sharing (view/edit/delete).
Show/Hide options switch - used to have an expanded overview of the items in the current tab. This option sidebar collapse button is useful when a results table with many columns is displayed in edit view.
Entity actions - implemented and added by the developer. Each action fulfills a requirement related to the application database table where the current record is stored.
Entity ownership fields- fields that show who owns or manages the current record:
User - stores the name of the user who created the record;
Business Unit - is set for each user;
Organization - is set for each user.
Access Control List, visible only if enabled - represents the SHARING area of the current record and is visible only if it has been enabled by the developer.
For more information on edit views see Documentation → Develop App → Edit views.