https://learn.microsoft.com/en-us/openspecs/office_standards/ms-customui/d9422554-dbaf-42e0-9e4b-6416a80b0844
[MS-CUSTOMUI]: officeMenu (Office Menu) | Microsoft Learn
This element specifies the Office Menu of the application. It is used to reference the built-in Office Menu. This element
office menumsmicrosoftlearn