Every organization, every type of system and node, can be represented from a “higher-level” perspective. Parent layers add one or more levels “up” from the current root node.
A root is the origin parent node for a tree, representing the perspective of the whole
Any node can serve as a point of reference, with a perspective of “standing in the shoes of” that position
A new root origin node can be used to represent a real parent, such as an organization or a site, or an abstract parent, such as a category or market
A “new” parent node may be added 1-level up, or a whole superstructure may be added, with one node indicated as the hook for the “old” root
