[dev-context] attachments in PDF/A-3

[Hans Hagen]

On 3/17/2019 4:41 PM, Pablo Rodriguez wrote:

> - The /Filespec lacks association with the PDF document or any of its
> parts, such as pages
> (https://github.com/veraPDF/veraPDF-validation-profiles/wiki/PDFA-Parts-2-and-3-rules#rule-68-4).
> 
>      From
>      https://www.pdfa.org/wp-content/uploads/2018/10/PDF20_AN002-AF.pdf,
>      it seems that either the /Catalog or a /Page dictionary (there are
>      other ones, but I would limit attachments in ConTeXt to those two
>      [if not to the /Catalog itself only]) should contain an /AF entry
>      with the reference to the /Filespec object(s). I assume that
>      the value type for the /AF entry is an array of one or multiple
>      object references.
this is stricky one as some viewers then can end up with duplicate 
entries in side bars and/or funny scaling of the attachment symbol (at 
least that is what i remember when looking into it)

Hans

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