I wish more PDFs were generated as hybrid PDFs. These are PDFs that also include their original source material. Then you have a document whose format is fixed,

I wish more PDFs were generated as hybrid PDFs. These are PDFs that also include their original source material. Then you have a document whose format is fixed, but if you need more semantic information, there it is! LibreOffice makes this especially easy to do: https://wiki.documentfoundation.org/Faq/Writer/PDF_Hybrid https://wiki.documentfoundation.org/Faq/Writer/PDF_Hybrid