> As with the Java part of `pax`, it may be possible to extract > annotations from PDFs with a C/C++ program. But, it looks like > `latex-pax` is adding the extracted annotations to the PDF using > `pax.sty`. The `pax.sty` is for LaTeX, and it looks like it is for > pdfLaTeX only. It would be quite difficult to get it to work with > Texinfo on XeTeX/pdfTeX.
Oh, I don't mean that we should exactly follow the `pax` algorithm. I only mentioned it because it provides a solution. Isn't it possible to add links with the `pdfmark` operator in the same way as is already done for annotations by `extractpdfmark`? In Adobe's pdfmark reference manual (`5150.Pdfmark.pdf`) I see a section 2.1.2 called 'Links', which appears to be exactly what's needed. Werner