Hi Arash, Thank you for your kind comments! On Fri, Jun 28, 2019 at 4:32 AM Arash Esbati wrote: > Does this sentence makes more sense: > > If you want to make AUCTeX aware of used LaTeX package in a document > and multi-file documents right away, insert the following in your > .emacs file. > > If so, we should clarify it. > I've found your rewrite somewhat more informative than the original. Thinking more about this issue, I would argue that TeX-parse-self should be set to t by default, because Do the right thing (DTRT) by default and optimize, if it's slow. Although I'm not at all professional, I do write little software as part of my job, and the above is what I always do. (Perhaps it would be hard to scan the LaTeX directory tree once for index search?) Just my two cents. Cheers, Ryo