vpe – Source specials for PDF output

VPE is a sys­tem to make the equiv­a­lent of “source spe­cial” marks in a PDF file. Click­ing on a mark will ac­ti­vate an ed­i­tor, point­ing at the source line that pro­duced the text that was marked.
The sys­tem com­prises a perl file (vpe.pl) and a LaTeX pack­age (vpe.sty); it will work with PDF files gen­er­ated via LaTeX/dvips, pdfTeX (ver­sion 0.14 or bet­ter), and LaTeX/VTeX. Us­ing the LaTeX/dvips or pdfLaTeX routes, the (pdf)TeX pro­ces­sor should be run with shell es­capes en­abled.