This manuscript is a compilation of information that has been available for some time. We will try to present this information in a way that will be helpful to non-specialists in an easy to digest manner. The nature of this information tends towards the technical and sometimes keeps needed information out of the reach of those that could use it most. We will try to keep this in mind while presenting the needed information. Also, while not being technically correct, we have kept reference citations to a minimum, and have inserted numbers, i.e.: , to keep the interruptions to the flow ideas as few as possible.