This was reported on SO: http://stackoverflow.com/questions/37414837/org-mode-overwriting-globals-properties-in-block-headers
The ECM is as follows: --8<---------------cut here---------------start------------->8--- #+PROPERTY: header-args :results silent #+BEGIN_SRC elisp ;; this one is silent (setq foo "bar) #+END_SRC #+BEGIN_SRC elisp :results output ;; this one is being outputted (princ "foo") #+END_SRC --8<---------------cut here---------------end--------------->8--- The second code block *should* output "foo" as its result, but it does not: the :results silent header in the property seems to be in conrol. Org version: Org-mode version 8.3.4 (release_8.3.4-1026-gf0ff25 @ /home/nick/elisp/org-mode/lisp/) -- Nick