Bill Zimmerly writes for both computers and humans and always seeks to make the utmost sense to both. As a professional programmer, his career has spanned over thirty years in such diverse businesses as roof-truss engineering, statistical biochemical evaluation of herbicides, device drivers for medical instruments, and insurance illustrations. Preferring to stay "as close to the metal" as possible, he is well-armed with detailed programming knowledge and tools like FORTH, C, and Assembler. After retirement, he has taken up writing articles for on-line Journals such as IBM developerWorks and books about technology. Rural living in retirement is another of his passions and he calls Hillsboro, Missouri, USA his home.