Dear sir, My name is Wara Srichaveng.I live in Thailand. Now I study at Kasetsart University. I go to your webpage and see PDF417 barcode. My thesis need some information about PDF417 barcode. I want to know about how to use Reed Solomon derive correct codewords from undecoded codewords or misdecodes codewords.If you have that information ,please sent to me. Thank you for your kind. Wara Srichaveng _____________________________________________________________ Enjoy your mail, interesting and easy remeber at http://www.enjoymail.com