I already have SDK. But don't have time to play with it because I have some projects I am mandated to do for my day job and home business. As I posted previously when I asked Eric if SDK contain any references to the other rooms to manipulate with and he said no only in the assembly room with some of interfaces which that is why he is only limited to make Gemini plug in with union boolean function. So I can't make symmeterical pointers in the vertex room and few other things I would like to implement. So with this limited SDK is not worth to work on.