Hi for different files, I put different things in the post-tangle hook. At tha moment, I have an emacs-lisp code block, which I evaluate before I tangle, but I forget this sometimes - so y question: is it possible (and think to remember that it is, but I can't find how) to evaluate a source code block upon opening of the file, or set the org-babel-post-tangle-hook in a different way upon opening of the org file? The code block I am using at the moment is: ** Evaluate to run post tangle script #+begin_src emacs-lisp :results silent :tangle no :exports none (add-hook 'org-babel-post-tangle-hook ( lambda () (call-process-shell-command "./postTangleScript.sh" nil 0 nil) ) ) #+end_src Thanks, Rainer -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Stellenbosch University South Africa Tel : +33 - (0)9 53 10 27 44 Cell: +33 - (0)6 85 62 59 98 Fax (F): +33 - (0)9 58 10 27 44 Fax (D): +49 - (0)3 21 21 25 22 44 email: Rainer@krugs.de Skype: RMkrug