Hi In the following example (assuming the three text files exist): --8<---------------cut here---------------start------------->8--- * example for include When doing C-' on these INCLUDEs, the file opens, but not as expected: #+INCLUDE: ./testfile.txt Opens in emacs (expected). #+INCLUDE: ./testfile.xyz Tries to open externally but does not work as no viewer is available for .xyz files (kind of expected) #+INCLUDE: ./testfile Opens externally (not expected) --8<---------------cut here---------------end--------------->8--- I assume this is caused by my ~/mailcap file ,---- | application/pdf; open %s | application/*; open %s `---- Which I have for gnus. Is there a way to specify the viewer / editor when using C-' on an INCLUDEd file? As they are all test files, I would like to open all of the INCLUDEd files in emacs. I am on a Mac, Yosemite, with: ,---- | GNU Emacs 24.4.1 (x86_64-apple-darwin14.0.0, Carbon Version 157 AppKit | 1343.16) of 2014-11-24 on Rainers-MacBook-Pro-4.local | | Org-mode version 8.3beta (release_8.3beta-603-g9aa58f @ | /Users/rainerkrug/.emacs.d/org-mode/lisp/) `---- Any suggestion? Thanks, Rainer -- Rainer M. Krug email: Rainerkrugsde PGP: 0x0F52F982