Many of the designations used by manufacturers and sellers to distinguish theri products are claimed as trademarks. Where those designatioins appear in this book, and Addison-Wesley was aware of a trademark claim, the designations have been printed with initial capital letters or in all cpitals. The author and publisher have taken care in the preparation of this book, but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental or consequential damages in connection with osr arising out of the use of the information or programs contained herein.