For convenience it is repeated below. The following three principles apply to all headed constructions. The head values of the mother and head daughter unify. Set values of the head daughter are subsets of corresponding values of the mother. Each comp daughter unifies with a valence element of the mother.
Inheritance is indicated by downward lines connecting constructions.
Left parts of reconstructible paths are not shown. In the case of V-Comp, this spares us the necessity of including the head feature in the construction. The Subset Principle provides for inclusion in the semantics and valence values of the mother the respective values of the head daughter. The Valence Principle insures that all complement daughters are licensed by valence elements of the mother, hence that the Kleene expansion on the right daughter box doesn't permit illicit constituents. Along with the Non-Local Subject construction, the Valence Principle lets us dispense with mention of any of the internal structure of the mother's valence.