diff --git a/global.org b/global.org
index a17cea5..0755acd 100644
--- a/global.org
+++ b/global.org
@@ -7,6 +7,14 @@
 #  -*- eval: (add-hook 'before-save-hook 'org-icalendar-export-to-ics nil t) -*-
 
 
+* Some remarks and comments
+** setq vs setq-default
+   Some variables are buffer-local, others are not; for non buffer-local variables the two commands are
+   equivalent; for the buffer-local variables, setq acts on the current buffer, whereas setq-default sets the
+   default value of the variable for buffers that do not have a local value.
+
+   :source: [https://stackoverflow.com/a/18173666]
+
 * Move Customize to a separate file
   #+BEGIN_SRC emacs-lisp
   (setq custom-file "~/.emacs.d/custom.el")