Hitherto, the three symmetric coordination types Phrasal Coordination, Right Node Raising, and Gapping have been mostly treated in isolation This book presents a successful attempt at developing a uniform approach - couched in a transformational framework, but also applicable to other grammatical approaches But the account not only provides a common frame for coordination In effect, it does away with the strict distinction between simplex and coordinate structures The proposed approach - based on a natural extension to the classical X-scheme - is equally valid for both simplex and coordinate structures, and, thus, it presents a significant contribution to grammars of phrasal structures in general This book presents a successful attempt at developing a uniform approach to symmetric coordination phenomena (Phrasal Coordination, Right Node Raising, and Gapping) But the account not only provides a common frame for coordination In effect, it even provides a common frame for phrasal structures in general, since the proposed direct phrase structure approach is equally valid for both simplex and coordinate structures