Problem:
When quoting books or academic articles, the page number of the content doesn’t match the page number of the PDF (eg. there are a few blank pages in the beginning, or an article is part of a longer issue). The automated pagenumber is thus generally wrong.
Solution
In the page gathering all the annotations of a PDF, allow for a simple property called Page Offset to introduce the number of the first page, so that all the following pages can automatically be updated and correspond to the publication page number.