Well, that is implied by the title: "Plywood: A New [...] Framework". Frameworks are by definition about providing the core elements to build your stuff on top of them[0].
The above description indicates that it is a very general-purpose framework (handling things as disparate as game engines and web servers) and that it aims to enable code reuse, not just eliminate boilerplate code.
For example think of MFC: you know what that framework is all about (Windows GUI applications), yet the description could easily fit with MFC (and indeed all of the above have been implemented on top of it).