No need to apologize :) But it is frowned upon. An article is a textual, rather than hypertextual, document. Links can be used to make the PDF easier to navigat

No need to apologize :) But it is frowned upon. An article is a textual, rather than hypertextual, document. Links can be used to make the PDF easier to navigate, but should not make the printed document inferior. So, in short: * The file is available at the following URL: http://example.com http://example.com <- good * The file is available here <- bad [here = clickable link]