+;; org mode ical export
+(setq org-icalendar-timezone "America/Los_Angeles")
+(setq org-icalendar-use-scheduled '(todo-start event-if-todo))
+(setq org-icalendar-store-UID t)
+
+;; org babel support
+(org-babel-do-load-languages
+ 'org-babel-load-languages
+ '((emacs-lisp . t )
+ (R . t)
+ (latex . t)))
+;; org-babel-by-backend
+(defmacro org-babel-by-backend (&rest body)
+ `(case (if (boundp 'backend)
+ (org-export-backend-name backend)
+ nil) ,@body))
+
+
+