In the article "Principles for the placement of the meta objects in the framework hierarchy" the underlying principles for placing the metaobjects in the framework hierarchy are described. In total there are six principles, the second of which is Area and Group.
The level 1 and 2 objects in column 1 are represented by "area" and "group".
We find an example of this in the process dimension
The naming of these meta-objects follows the same pattern used by several process frameworks, where you find "Process Area" at level 1 and "Process Group" at level 2 (reference: Process hierarchy in different standards).
This principle has been applied as far as possible in all dimensions. Here is a selection that demonstrates this:
