If PDF files are included using pdfTeX, PDF annotations are stripped. The pax project offers a solution without altering pdfTeX. A Java program (pax.jar) parses the PDF file that will later be included. The program then writes the data of the annotations into a file that can be read by TeX.

The LaTeX package pax extends the graphics package to support the scheme: if a PDF file is included, the package looks for the file with the annotation data, reads them and puts the annotations in the right place.

Project status: experimental

See also pdftex.

The author is Heiko Oberdiek. The package is Copyright © 2006-2008 Heiko Oberdiek.