Hello,



I may be looking in the wrong way and not in the right place, but I can't find in the Microsoft documentation (and elsewhere), a complete explanation for customizing the backstage view of word 365. I peck away at almost nothing here is there, which wastes a lot of time.

Is there any documentation that gives the architecture of the customUI.xml file for the backstage, with the different elements that compose it (I already have some stuff) but especially the attributes associated with them, like the different values of the idMso="???" attribute for each element, and others...

For the customization of the ribbon, we find what we need, but I have trouble with the backstage :-[ which seems no more complicated if we had the elements and their attributes.

Best regards,
David