Is official: http://partners.adobe.com/asn/developer/acrosdk/docs/filefmtspecs/PDFReference.pdf http://partners.adobe.com/asn/developer/acrosdk/docs/filefmtspecs/PDFReference.zip The book is scheduled for --12-15: http://www.amazon.com/exec/obidos/ASIN/0201758393/ Best regards Martin -- http://www.tm.oneiros.de/calendar/2002/