The report is organized in the following manner: The first section reviews the major points in the workshop presentations and dialogues, concluding with a summation of the principal lessons they provided and the areas of action most urgently suggested for the future. It is followed by three appendixes and detailed endnotes. Appendix A contains abstracts of the 15 formal presentations in a common format. Appendix B presents background material on the technology and a chronology of its development and market experience. Appendix C provides the workshop agenda and list of participants. The endnotes consist of references made by presenters and other information deemed necessary to support and clarify the text.