Display AFRelationship value in File Attachments pane

[pwyatt]

For PDF Associated Files, please display the value of the AFRelationship key in a new column in the File Attachments pane.

Many apps are now using PDF Associated Files including C2PA manifests (from Adobe) and PDFs from LaTeX with MathML. Adobe Acrobat already displays this information. Thanks.

[Daniel - PDF-XChange]

Hello, pwyatt

Would it be possible to see some sample files in which this is an issue, as well as other files where things are working as desired, so we can compare and see what can be done?

Kind regards,

[pwyatt]

* C2PA manifests: https://github.com/c2pa-org/public-testfiles has a PDF example

* LaTeX: https://latex3.github.io/tagging-project/ then follow the link to https://github.com/latex3/tagging-project/discussions/72 where you can find lots of examples with MathML AFs

* PDF/A-3-based ZUGFeRD e-invoices: see https://www.mustangproject.org/zugferd/#samples and https://github.com/ZUGFeRD/corpus. See this nice summary about ZUGFeRD: https://www.pdflib.com/pdf-knowledge-base/zugferd-and-factur-x/

* ONIX book (XML metadata) manifest (ONIX = https://www.editeur.org/8/ONIX/) examples: https://pdfa.org/download-area/onix/EUPL2024_Accessible_ONIX.pdf, https://pdfa.org/download-area/onix/EUPL2024_Accessible_ONIX_PDFUA-1.pdf, and https://pdfa.org/download-area/onix/EUPL2024_Accessible_ONIX_PDFUA-1_JS.pdf

* Generic example: see the downloaded PDF from https://www.pdflib.com/pdflib-cookbook/interchange/associated_files/

They can also be generated by Metanorma (see https://www.metanorma.org/author/topics/sections/attachments/) and recent LibreOffice releases.

Note also that PDF Associated Files don't necessarily have an associated page.