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A comment on Show HN: Parsing horse racing charts with Apache PDFBox. Parent comment

Re:Show HN: Parsing horse racing charts with Apache PDFBox by jahewson on Saturday July 08, 2017 @01:14AM (#14724189)
PDF has a feature called Tagged PDF, which allows the document to be annotated with a semantic structure. Almost nobody bothers to generate such PDFs, but the support is there!
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Re:Show HN: Parsing horse racing charts with Apache PDFBox by oever on Sunday July 09, 2017 @04:58AM (#14728938)
Dutch law requires that official documents be published as PDF/A-1a which is a subset of PDF 1.4 that can be archived and must be tagged.
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