I was reading the appendix to "The Errors of TeX" by Knuth (
errorlog.tex, written with plain TeX) and I noticed that there is a PDF file
errorlog.pdf with nice hyperlinks and I was wondering how that is possible.
It looks like magic to me, since the plain TeX file apparently has nothing related to hyperlinks. I've noticed that the PDF file was generated with
pdftex, so I was wondering if there is some
pdftex-specific technique allowing such hyperlinks.
Does anybody know what kind of modifications are necessary (if any) in order to compile Knuth's file with
pdftex and get those hyperlinks?