Each of the customizable and extensible controls corresponds to a node in the structure tree. To improve the search efficiency and facilitate customization, the controls are organized according to the structure of the interface.
The next level of the root node of the structure area are: File, Ribbon, Dock Bars, Status Bars, Context Menus. Each function on the interface belongs to a certain type. That is also how the functions are orgainized in the structure area for customization.
How functions are organized into 5 groups are introduced in more detail below. You will also get to know the structure tree of the Customize window.