1. The document discusses the DP hypothesis, which proposes that determiners are more important than just specifier elements and that DP is a functional projection above NP.
2. It follows X-bar theory and gives NP functional architecture.
3. Evidence for functional projections above NP comes from Tok Pisin pronouns, which have functional projections between NP and DP with a morpheme head, and the pronoun moves up through these projections.