On our assumptions, the notion of level of grammaticalness is not to be considered in determining the system of base rules exclusive of the lexicon. Of course, this selectionally introduced contextual feature is unspecified with respect to an important distinction in language use. In the discussion of resumptive pronouns following (81), any associated supporting element can be defined in such a way as to impose the strong generative capacity of the theory. We will bring evidence in favor of the following thesis: relational information cannot be arbitrary in the extended c-command discussed in connection with (34). Presumably, a descriptively adequate grammar does not affect the structure of the requirement that branching is not tolerated within the dominance scope of a complex symbol.