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Hello, I maintain a pdf library that can read, write and modify PDF files. Adobe made me some work updating it to deal with the PDF 1.5 extensions, especially object streams and cross reference streams. I think I've got it now, but applications don't respond as I expect. I made a test by extending the PDF Reference Manual in 1.5 format (as available from Adobe, 9190216 Bytes, md5sum c7f47955c825ed83dfe2a6a2fac1a092) with an update section that places a large string on the first page. But the string doesn't get displayed in xpdf, and Acrobat talks of a damaged file. I'm stuck in development because I don't know what's still wrong. I created an object stream that /Extends the correct existing one, wrote a xref stream containing all new and updated objects, and wrote a new startxref number pointing to the xref stream, and my own code is able to correctly read this file in again :-) I know this is a question very "deep inside", but perhaps here on this list is someone with enough knowledge to give me a hint. You can get the updated section at http://www.musall.de/files/rest.pdf, just concatenate it to the above mentioned PDF reference file. The updated section is just 1900 bytes. Streams are uncompressed so that stream objects and xref streams are directly viewable with any hex editor. Regards Maik To change your subscription: http://www.pdfzone.com/discussions/lists-pdfdev.html
