there are so many ways to gain it, and probably even more to lose it. for those printing the parts, i will have hardware kits available with all the other pieces required to make a rig fly, although most of the pieces are available at hardware stores. think about it, you are passing a human being, your human being through your body and into the world. the situation is different when \include is used instead of \input. thanks a lot for this wonderful course! we told family and friends that we were going to build a straw bale house. 