\useattachment: Embedding files in PDFs

\useattachment: Embedding files in PDFs

[Tobias Burnus]

Hi all,

I can use \useattachment to embed/attach files in a PDF file. I can use:

\useattachment[whatever][title][newname][test.tex]
\attachment[whatever]

This creates an attachment with the description "title" and the name
"test.tex". However, how can I set the author/subject? (Shown in tool
tip of the annotation symbol; it is shown above the description;
actually subject is enough for me.)

Additionally, I miss the file size and possibly the modification date
for the attachments; they are often handy to have.

Is is possible to associate an embedded file stream with the document
itself without creating an annotation symbol as with \attachment in
ConTeXt? (The PDF spec allows this; cf. e.g. 3.10.3 in the PDF spec and
http://www.microtype.com/showcase/EmbedFiles.pdf for an example PDF file.)

Tobias
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