The difference between different versions of Bitrix, or some kind of setting?

Question

1C-Bitrix

In version 16, the structure in the catalog is as follows:
catalog
-elements
-category
--elements
--subcategory
---elements
And in version 16:
directory
-category
--subcategory
Is this some kind of setting, or did it come with an update?

Answer 1

This is a setting for a specific infoblock "Sections and elements view mode"