About I am a writer, author, programmer and Internet marketer. I have written ten technical books (published by O'Reilly and John Wiley & Sons) which have appeared in English, Spanish, French, German, Japanese, and Chinese. I am also the writer of a number of technical articles for the O'Reilly Network. I was a member of the OASIS RELAX NG technical committee which created the RELAX NG schema language for XML. In addition to technical books, I have also written copy, travel articles and features for newspapers and magazines, children's books, and nonfiction books.